31504980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^3\times {\mathrm{239}}^1$

素因数の和:290

約数の個数: 96

約数和(自身を含む): 95961600

約数和(自身を除く): 64456620

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 169, 195, 239, 260, 338, 390, 478, 507, 676, 717, 780, 845, 956, 1014, 1195, 1434, 1690, 2028, 2197, 2390, 2535, 2868, 3107, 3380, 3585, 4394, 4780, 5070, 6214, 6591, 7170, 8788, 9321, 10140, 10985, 12428, 13182, 14340, 15535, 18642, 21970, 26364, 31070, 32955, 37284, 40391, 43940, 46605, 62140, 65910, 80782, 93210, 121173, 131820, 161564, 186420, 201955, 242346, 403910, 484692, 525083, 605865, 807820, 1050166, 1211730, 1575249, 2100332, 2423460, 2625415, 3150498, 5250830, 6300996, 7876245, 10501660, 15752490, 31504980]

約数ペア:

[(1, 31504980), (2, 15752490), (3, 10501660), (4, 7876245), (5, 6300996), (6, 5250830), (10, 3150498), (12, 2625415), (13, 2423460), (15, 2100332), (20, 1575249), (26, 1211730), (30, 1050166), (39, 807820), (52, 605865), (60, 525083), (65, 484692), (78, 403910), (130, 242346), (156, 201955), (169, 186420), (195, 161564), (239, 131820), (260, 121173), (338, 93210), (390, 80782), (478, 65910), (507, 62140), (676, 46605), (717, 43940), (780, 40391), (845, 37284), (956, 32955), (1014, 31070), (1195, 26364), (1434, 21970), (1690, 18642), (2028, 15535), (2197, 14340), (2390, 13182), (2535, 12428), (2868, 10985), (3107, 10140), (3380, 9321), (3585, 8788), (4394, 7170), (4780, 6591), (5070, 6214)]