28436920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:149

約数の個数: 128

約数和(自身を含む): 74649600

約数和(自身を除く): 46212680

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 31, 34, 38, 40, 62, 68, 71, 76, 85, 95, 124, 136, 142, 152, 155, 170, 190, 248, 284, 310, 323, 340, 355, 380, 527, 568, 589, 620, 646, 680, 710, 760, 1054, 1178, 1207, 1240, 1292, 1349, 1420, 1615, 2108, 2201, 2356, 2414, 2584, 2635, 2698, 2840, 2945, 3230, 4216, 4402, 4712, 4828, 5270, 5396, 5890, 6035, 6460, 6745, 8804, 9656, 10013, 10540, 10792, 11005, 11780, 12070, 12920, 13490, 17608, 20026, 21080, 22010, 22933, 23560, 24140, 26980, 37417, 40052, 41819, 44020, 45866, 48280, 50065, 53960, 74834, 80104, 83638, 88040, 91732, 100130, 114665, 149668, 167276, 183464, 187085, 200260, 209095, 229330, 299336, 334552, 374170, 400520, 418190, 458660, 710923, 748340, 836380, 917320, 1421846, 1496680, 1672760, 2843692, 3554615, 5687384, 7109230, 14218460, 28436920]

約数ペア:

[(1, 28436920), (2, 14218460), (4, 7109230), (5, 5687384), (8, 3554615), (10, 2843692), (17, 1672760), (19, 1496680), (20, 1421846), (31, 917320), (34, 836380), (38, 748340), (40, 710923), (62, 458660), (68, 418190), (71, 400520), (76, 374170), (85, 334552), (95, 299336), (124, 229330), (136, 209095), (142, 200260), (152, 187085), (155, 183464), (170, 167276), (190, 149668), (248, 114665), (284, 100130), (310, 91732), (323, 88040), (340, 83638), (355, 80104), (380, 74834), (527, 53960), (568, 50065), (589, 48280), (620, 45866), (646, 44020), (680, 41819), (710, 40052), (760, 37417), (1054, 26980), (1178, 24140), (1207, 23560), (1240, 22933), (1292, 22010), (1349, 21080), (1420, 20026), (1615, 17608), (2108, 13490), (2201, 12920), (2356, 12070), (2414, 11780), (2584, 11005), (2635, 10792), (2698, 10540), (2840, 10013), (2945, 9656), (3230, 8804), (4216, 6745), (4402, 6460), (4712, 6035), (4828, 5890), (5270, 5396)]