1981823480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{673}}^1\times {\mathrm{809}}^1$

素因数の和:1513

約数の個数: 128

約数和(自身を含む): 5503075200

約数和(自身を除く): 3521251720

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 673, 728, 809, 910, 1346, 1618, 1820, 2692, 3236, 3365, 3640, 4045, 4711, 5384, 5663, 6472, 6730, 8090, 8749, 9422, 10517, 11326, 13460, 16180, 17498, 18844, 21034, 22652, 23555, 26920, 28315, 32360, 34996, 37688, 42068, 43745, 45304, 47110, 52585, 56630, 61243, 69992, 73619, 84136, 87490, 94220, 105170, 113260, 122486, 147238, 174980, 188440, 210340, 226520, 244972, 294476, 306215, 349960, 368095, 420680, 489944, 544457, 588952, 612430, 736190, 1088914, 1224860, 1472380, 2177828, 2449720, 2722285, 2944760, 3811199, 4355656, 5444570, 7077941, 7622398, 10889140, 14155882, 15244796, 19055995, 21778280, 28311764, 30489592, 35389705, 38111990, 49545587, 56623528, 70779410, 76223980, 99091174, 141558820, 152447960, 198182348, 247727935, 283117640, 396364696, 495455870, 990911740, 1981823480]

約数ペア:

[(1, 1981823480), (2, 990911740), (4, 495455870), (5, 396364696), (7, 283117640), (8, 247727935), (10, 198182348), (13, 152447960), (14, 141558820), (20, 99091174), (26, 76223980), (28, 70779410), (35, 56623528), (40, 49545587), (52, 38111990), (56, 35389705), (65, 30489592), (70, 28311764), (91, 21778280), (104, 19055995), (130, 15244796), (140, 14155882), (182, 10889140), (260, 7622398), (280, 7077941), (364, 5444570), (455, 4355656), (520, 3811199), (673, 2944760), (728, 2722285), (809, 2449720), (910, 2177828), (1346, 1472380), (1618, 1224860), (1820, 1088914), (2692, 736190), (3236, 612430), (3365, 588952), (3640, 544457), (4045, 489944), (4711, 420680), (5384, 368095), (5663, 349960), (6472, 306215), (6730, 294476), (8090, 244972), (8749, 226520), (9422, 210340), (10517, 188440), (11326, 174980), (13460, 147238), (16180, 122486), (17498, 113260), (18844, 105170), (21034, 94220), (22652, 87490), (23555, 84136), (26920, 73619), (28315, 69992), (32360, 61243), (34996, 56630), (37688, 52585), (42068, 47110), (43745, 45304)]