20902304080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{397}}^1\times {\mathrm{631}}^1$

素因数の和:1197

約数の個数: 160

約数和(自身を含む): 56142835200

約数和(自身を除く): 35240531120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 149, 280, 298, 397, 560, 596, 631, 745, 794, 1043, 1192, 1262, 1490, 1588, 1985, 2086, 2384, 2524, 2779, 2980, 3155, 3176, 3970, 4172, 4417, 5048, 5215, 5558, 5960, 6310, 6352, 7940, 8344, 8834, 10096, 10430, 11116, 11920, 12620, 13895, 15880, 16688, 17668, 20860, 22085, 22232, 25240, 27790, 31760, 35336, 41720, 44170, 44464, 50480, 55580, 59153, 70672, 83440, 88340, 94019, 111160, 118306, 176680, 188038, 222320, 236612, 250507, 295765, 353360, 376076, 414071, 470095, 473224, 501014, 591530, 658133, 752152, 828142, 940190, 946448, 1002028, 1183060, 1252535, 1316266, 1504304, 1656284, 1753549, 1880380, 2004056, 2070355, 2366120, 2505070, 2632532, 3290665, 3312568, 3507098, 3760760, 4008112, 4140710, 4732240, 5010140, 5265064, 6581330, 6625136, 7014196, 7521520, 8281420, 8767745, 10020280, 10530128, 13162660, 14028392, 16562840, 17535490, 20040560, 26325320, 28056784, 33125680, 35070980, 37325543, 52650640, 70141960, 74651086, 140283920, 149302172, 186627715, 261278801, 298604344, 373255430, 522557602, 597208688, 746510860, 1045115204, 1306394005, 1493021720, 2090230408, 2612788010, 2986043440, 4180460816, 5225576020, 10451152040, 20902304080]

約数ペア:

[(1, 20902304080), (2, 10451152040), (4, 5225576020), (5, 4180460816), (7, 2986043440), (8, 2612788010), (10, 2090230408), (14, 1493021720), (16, 1306394005), (20, 1045115204), (28, 746510860), (35, 597208688), (40, 522557602), (56, 373255430), (70, 298604344), (80, 261278801), (112, 186627715), (140, 149302172), (149, 140283920), (280, 74651086), (298, 70141960), (397, 52650640), (560, 37325543), (596, 35070980), (631, 33125680), (745, 28056784), (794, 26325320), (1043, 20040560), (1192, 17535490), (1262, 16562840), (1490, 14028392), (1588, 13162660), (1985, 10530128), (2086, 10020280), (2384, 8767745), (2524, 8281420), (2779, 7521520), (2980, 7014196), (3155, 6625136), (3176, 6581330), (3970, 5265064), (4172, 5010140), (4417, 4732240), (5048, 4140710), (5215, 4008112), (5558, 3760760), (5960, 3507098), (6310, 3312568), (6352, 3290665), (7940, 2632532), (8344, 2505070), (8834, 2366120), (10096, 2070355), (10430, 2004056), (11116, 1880380), (11920, 1753549), (12620, 1656284), (13895, 1504304), (15880, 1316266), (16688, 1252535), (17668, 1183060), (20860, 1002028), (22085, 946448), (22232, 940190), (25240, 828142), (27790, 752152), (31760, 658133), (35336, 591530), (41720, 501014), (44170, 473224), (44464, 470095), (50480, 414071), (55580, 376076), (59153, 353360), (70672, 295765), (83440, 250507), (88340, 236612), (94019, 222320), (111160, 188038), (118306, 176680)]