28439580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{101}}^1$

素因数の和:164

約数の個数: 144

約数和(自身を含む): 91403424

約数和(自身を除く): 62963844

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 19, 20, 26, 30, 38, 39, 52, 57, 60, 65, 76, 78, 95, 101, 114, 130, 156, 190, 195, 202, 228, 247, 260, 285, 303, 361, 380, 390, 404, 494, 505, 570, 606, 722, 741, 780, 988, 1010, 1083, 1140, 1212, 1235, 1313, 1444, 1482, 1515, 1805, 1919, 2020, 2166, 2470, 2626, 2964, 3030, 3610, 3705, 3838, 3939, 4332, 4693, 4940, 5252, 5415, 5757, 6060, 6565, 7220, 7410, 7676, 7878, 9386, 9595, 10830, 11514, 13130, 14079, 14820, 15756, 18772, 19190, 19695, 21660, 23028, 23465, 24947, 26260, 28158, 28785, 36461, 38380, 39390, 46930, 49894, 56316, 57570, 70395, 72922, 74841, 78780, 93860, 99788, 109383, 115140, 124735, 140790, 145844, 149682, 182305, 218766, 249470, 281580, 299364, 364610, 374205, 437532, 473993, 498940, 546915, 729220, 748410, 947986, 1093830, 1421979, 1496820, 1895972, 2187660, 2369965, 2843958, 4739930, 5687916, 7109895, 9479860, 14219790, 28439580]

約数ペア:

[(1, 28439580), (2, 14219790), (3, 9479860), (4, 7109895), (5, 5687916), (6, 4739930), (10, 2843958), (12, 2369965), (13, 2187660), (15, 1895972), (19, 1496820), (20, 1421979), (26, 1093830), (30, 947986), (38, 748410), (39, 729220), (52, 546915), (57, 498940), (60, 473993), (65, 437532), (76, 374205), (78, 364610), (95, 299364), (101, 281580), (114, 249470), (130, 218766), (156, 182305), (190, 149682), (195, 145844), (202, 140790), (228, 124735), (247, 115140), (260, 109383), (285, 99788), (303, 93860), (361, 78780), (380, 74841), (390, 72922), (404, 70395), (494, 57570), (505, 56316), (570, 49894), (606, 46930), (722, 39390), (741, 38380), (780, 36461), (988, 28785), (1010, 28158), (1083, 26260), (1140, 24947), (1212, 23465), (1235, 23028), (1313, 21660), (1444, 19695), (1482, 19190), (1515, 18772), (1805, 15756), (1919, 14820), (2020, 14079), (2166, 13130), (2470, 11514), (2626, 10830), (2964, 9595), (3030, 9386), (3610, 7878), (3705, 7676), (3838, 7410), (3939, 7220), (4332, 6565), (4693, 6060), (4940, 5757), (5252, 5415)]