81753207980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1277}}^1\times {\mathrm{8867}}^1$

素因数の和:10191

約数の個数: 72

約数和(自身を含む): 181355530608

約数和(自身を除く): 99602322628

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1277, 1444, 1805, 2554, 3610, 5108, 6385, 7220, 8867, 12770, 17734, 24263, 25540, 35468, 44335, 48526, 88670, 97052, 121315, 168473, 177340, 242630, 336946, 460997, 485260, 673892, 842365, 921994, 1684730, 1843988, 2304985, 3200987, 3369460, 4609970, 6401974, 9219940, 11323159, 12803948, 16004935, 22646318, 32009870, 45292636, 56615795, 64019740, 113231590, 215140021, 226463180, 430280042, 860560084, 1075700105, 2151400210, 4087660399, 4302800420, 8175320798, 16350641596, 20438301995, 40876603990, 81753207980]

約数ペア:

[(1, 81753207980), (2, 40876603990), (4, 20438301995), (5, 16350641596), (10, 8175320798), (19, 4302800420), (20, 4087660399), (38, 2151400210), (76, 1075700105), (95, 860560084), (190, 430280042), (361, 226463180), (380, 215140021), (722, 113231590), (1277, 64019740), (1444, 56615795), (1805, 45292636), (2554, 32009870), (3610, 22646318), (5108, 16004935), (6385, 12803948), (7220, 11323159), (8867, 9219940), (12770, 6401974), (17734, 4609970), (24263, 3369460), (25540, 3200987), (35468, 2304985), (44335, 1843988), (48526, 1684730), (88670, 921994), (97052, 842365), (121315, 673892), (168473, 485260), (177340, 460997), (242630, 336946)]