28040340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{89}}^2$

素因数の和:249

約数の個数: 72

約数和(自身を含む): 80750880

約数和(自身を除く): 52710540

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 59, 60, 89, 118, 177, 178, 236, 267, 295, 354, 356, 445, 534, 590, 708, 885, 890, 1068, 1180, 1335, 1770, 1780, 2670, 3540, 5251, 5340, 7921, 10502, 15753, 15842, 21004, 23763, 26255, 31506, 31684, 39605, 47526, 52510, 63012, 78765, 79210, 95052, 105020, 118815, 157530, 158420, 237630, 315060, 467339, 475260, 934678, 1402017, 1869356, 2336695, 2804034, 4673390, 5608068, 7010085, 9346780, 14020170, 28040340]

約数ペア:

[(1, 28040340), (2, 14020170), (3, 9346780), (4, 7010085), (5, 5608068), (6, 4673390), (10, 2804034), (12, 2336695), (15, 1869356), (20, 1402017), (30, 934678), (59, 475260), (60, 467339), (89, 315060), (118, 237630), (177, 158420), (178, 157530), (236, 118815), (267, 105020), (295, 95052), (354, 79210), (356, 78765), (445, 63012), (534, 52510), (590, 47526), (708, 39605), (885, 31684), (890, 31506), (1068, 26255), (1180, 23763), (1335, 21004), (1770, 15842), (1780, 15753), (2670, 10502), (3540, 7921), (5251, 5340)]