640787940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{1091}}^1$

素因数の和:1370

約数の個数: 144

約数和(自身を含む): 2103506496

約数和(自身を除く): 1462718556

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 251, 260, 390, 468, 502, 585, 753, 780, 1004, 1091, 1170, 1255, 1506, 2182, 2259, 2340, 2510, 3012, 3263, 3273, 3765, 4364, 4518, 5020, 5455, 6526, 6546, 7530, 9036, 9789, 9819, 10910, 11295, 13052, 13092, 14183, 15060, 16315, 16365, 19578, 19638, 21820, 22590, 28366, 29367, 32630, 32730, 39156, 39276, 42549, 45180, 48945, 49095, 56732, 58734, 65260, 65460, 70915, 85098, 97890, 98190, 117468, 127647, 141830, 146835, 170196, 195780, 196380, 212745, 255294, 273841, 283660, 293670, 425490, 510588, 547682, 587340, 638235, 821523, 850980, 1095364, 1276470, 1369205, 1643046, 2464569, 2552940, 2738410, 3286092, 3559933, 4107615, 4929138, 5476820, 7119866, 8215230, 9858276, 10679799, 12322845, 14239732, 16430460, 17799665, 21359598, 24645690, 32039397, 35599330, 42719196, 49291380, 53398995, 64078794, 71198660, 106797990, 128157588, 160196985, 213595980, 320393970, 640787940]

約数ペア:

[(1, 640787940), (2, 320393970), (3, 213595980), (4, 160196985), (5, 128157588), (6, 106797990), (9, 71198660), (10, 64078794), (12, 53398995), (13, 49291380), (15, 42719196), (18, 35599330), (20, 32039397), (26, 24645690), (30, 21359598), (36, 17799665), (39, 16430460), (45, 14239732), (52, 12322845), (60, 10679799), (65, 9858276), (78, 8215230), (90, 7119866), (117, 5476820), (130, 4929138), (156, 4107615), (180, 3559933), (195, 3286092), (234, 2738410), (251, 2552940), (260, 2464569), (390, 1643046), (468, 1369205), (502, 1276470), (585, 1095364), (753, 850980), (780, 821523), (1004, 638235), (1091, 587340), (1170, 547682), (1255, 510588), (1506, 425490), (2182, 293670), (2259, 283660), (2340, 273841), (2510, 255294), (3012, 212745), (3263, 196380), (3273, 195780), (3765, 170196), (4364, 146835), (4518, 141830), (5020, 127647), (5455, 117468), (6526, 98190), (6546, 97890), (7530, 85098), (9036, 70915), (9789, 65460), (9819, 65260), (10910, 58734), (11295, 56732), (13052, 49095), (13092, 48945), (14183, 45180), (15060, 42549), (16315, 39276), (16365, 39156), (19578, 32730), (19638, 32630), (21820, 29367), (22590, 28366)]