80578640

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{331}}^1$

素因数の和:540

約数の個数: 80

約数和(自身を含む): 200076480

約数和(自身を除く): 119497840

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 179, 272, 331, 340, 358, 662, 680, 716, 895, 1324, 1360, 1432, 1655, 1790, 2648, 2864, 3043, 3310, 3580, 5296, 5627, 6086, 6620, 7160, 11254, 12172, 13240, 14320, 15215, 22508, 24344, 26480, 28135, 30430, 45016, 48688, 56270, 59249, 60860, 90032, 112540, 118498, 121720, 225080, 236996, 243440, 296245, 450160, 473992, 592490, 947984, 1007233, 1184980, 2014466, 2369960, 4028932, 4739920, 5036165, 8057864, 10072330, 16115728, 20144660, 40289320, 80578640]

約数ペア:

[(1, 80578640), (2, 40289320), (4, 20144660), (5, 16115728), (8, 10072330), (10, 8057864), (16, 5036165), (17, 4739920), (20, 4028932), (34, 2369960), (40, 2014466), (68, 1184980), (80, 1007233), (85, 947984), (136, 592490), (170, 473992), (179, 450160), (272, 296245), (331, 243440), (340, 236996), (358, 225080), (662, 121720), (680, 118498), (716, 112540), (895, 90032), (1324, 60860), (1360, 59249), (1432, 56270), (1655, 48688), (1790, 45016), (2648, 30430), (2864, 28135), (3043, 26480), (3310, 24344), (3580, 22508), (5296, 15215), (5627, 14320), (6086, 13240), (6620, 12172), (7160, 11254)]