81776240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:319

約数の個数: 160

約数和(自身を含む): 239984640

約数和(自身を除く): 158208400

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 47, 52, 56, 65, 70, 80, 91, 94, 104, 112, 130, 140, 182, 188, 208, 235, 239, 260, 280, 329, 364, 376, 455, 470, 478, 520, 560, 611, 658, 728, 752, 910, 940, 956, 1040, 1195, 1222, 1316, 1456, 1645, 1673, 1820, 1880, 1912, 2390, 2444, 2632, 3055, 3107, 3290, 3346, 3640, 3760, 3824, 4277, 4780, 4888, 5264, 6110, 6214, 6580, 6692, 7280, 8365, 8554, 9560, 9776, 11233, 12220, 12428, 13160, 13384, 15535, 16730, 17108, 19120, 21385, 21749, 22466, 24440, 24856, 26320, 26768, 31070, 33460, 34216, 42770, 43498, 44932, 48880, 49712, 56165, 62140, 66920, 68432, 78631, 85540, 86996, 89864, 108745, 112330, 124280, 133840, 146029, 157262, 171080, 173992, 179728, 217490, 224660, 248560, 292058, 314524, 342160, 347984, 393155, 434980, 449320, 584116, 629048, 730145, 786310, 869960, 898640, 1022203, 1168232, 1258096, 1460290, 1572620, 1739920, 2044406, 2336464, 2920580, 3145240, 4088812, 5111015, 5841160, 6290480, 8177624, 10222030, 11682320, 16355248, 20444060, 40888120, 81776240]

約数ペア:

[(1, 81776240), (2, 40888120), (4, 20444060), (5, 16355248), (7, 11682320), (8, 10222030), (10, 8177624), (13, 6290480), (14, 5841160), (16, 5111015), (20, 4088812), (26, 3145240), (28, 2920580), (35, 2336464), (40, 2044406), (47, 1739920), (52, 1572620), (56, 1460290), (65, 1258096), (70, 1168232), (80, 1022203), (91, 898640), (94, 869960), (104, 786310), (112, 730145), (130, 629048), (140, 584116), (182, 449320), (188, 434980), (208, 393155), (235, 347984), (239, 342160), (260, 314524), (280, 292058), (329, 248560), (364, 224660), (376, 217490), (455, 179728), (470, 173992), (478, 171080), (520, 157262), (560, 146029), (611, 133840), (658, 124280), (728, 112330), (752, 108745), (910, 89864), (940, 86996), (956, 85540), (1040, 78631), (1195, 68432), (1222, 66920), (1316, 62140), (1456, 56165), (1645, 49712), (1673, 48880), (1820, 44932), (1880, 43498), (1912, 42770), (2390, 34216), (2444, 33460), (2632, 31070), (3055, 26768), (3107, 26320), (3290, 24856), (3346, 24440), (3640, 22466), (3760, 21749), (3824, 21385), (4277, 19120), (4780, 17108), (4888, 16730), (5264, 15535), (6110, 13384), (6214, 13160), (6580, 12428), (6692, 12220), (7280, 11233), (8365, 9776), (8554, 9560)]