21152040

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{149}}^1$

素因数の和:196

約数の個数: 192

約数和(自身を含む): 79056000

約数和(自身を除く): 57903960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 149, 156, 168, 169, 182, 195, 210, 260, 273, 280, 298, 312, 338, 364, 390, 420, 447, 455, 507, 520, 546, 596, 676, 728, 745, 780, 840, 845, 894, 910, 1014, 1043, 1092, 1183, 1192, 1352, 1365, 1490, 1560, 1690, 1788, 1820, 1937, 2028, 2086, 2184, 2235, 2366, 2535, 2730, 2980, 3129, 3380, 3549, 3576, 3640, 3874, 4056, 4172, 4470, 4732, 5070, 5215, 5460, 5811, 5915, 5960, 6258, 6760, 7098, 7748, 8344, 8940, 9464, 9685, 10140, 10430, 10920, 11622, 11830, 12516, 13559, 14196, 15496, 15645, 17745, 17880, 19370, 20280, 20860, 23244, 23660, 25032, 25181, 27118, 28392, 29055, 31290, 35490, 38740, 40677, 41720, 46488, 47320, 50362, 54236, 58110, 62580, 67795, 70980, 75543, 77480, 81354, 100724, 108472, 116220, 125160, 125905, 135590, 141960, 151086, 162708, 176267, 201448, 203385, 232440, 251810, 271180, 302172, 325416, 352534, 377715, 406770, 503620, 528801, 542360, 604344, 705068, 755430, 813540, 881335, 1007240, 1057602, 1410136, 1510860, 1627080, 1762670, 2115204, 2644005, 3021720, 3525340, 4230408, 5288010, 7050680, 10576020, 21152040]

約数ペア:

[(1, 21152040), (2, 10576020), (3, 7050680), (4, 5288010), (5, 4230408), (6, 3525340), (7, 3021720), (8, 2644005), (10, 2115204), (12, 1762670), (13, 1627080), (14, 1510860), (15, 1410136), (20, 1057602), (21, 1007240), (24, 881335), (26, 813540), (28, 755430), (30, 705068), (35, 604344), (39, 542360), (40, 528801), (42, 503620), (52, 406770), (56, 377715), (60, 352534), (65, 325416), (70, 302172), (78, 271180), (84, 251810), (91, 232440), (104, 203385), (105, 201448), (120, 176267), (130, 162708), (140, 151086), (149, 141960), (156, 135590), (168, 125905), (169, 125160), (182, 116220), (195, 108472), (210, 100724), (260, 81354), (273, 77480), (280, 75543), (298, 70980), (312, 67795), (338, 62580), (364, 58110), (390, 54236), (420, 50362), (447, 47320), (455, 46488), (507, 41720), (520, 40677), (546, 38740), (596, 35490), (676, 31290), (728, 29055), (745, 28392), (780, 27118), (840, 25181), (845, 25032), (894, 23660), (910, 23244), (1014, 20860), (1043, 20280), (1092, 19370), (1183, 17880), (1192, 17745), (1352, 15645), (1365, 15496), (1490, 14196), (1560, 13559), (1690, 12516), (1788, 11830), (1820, 11622), (1937, 10920), (2028, 10430), (2086, 10140), (2184, 9685), (2235, 9464), (2366, 8940), (2535, 8344), (2730, 7748), (2980, 7098), (3129, 6760), (3380, 6258), (3549, 5960), (3576, 5915), (3640, 5811), (3874, 5460), (4056, 5215), (4172, 5070), (4470, 4732)]