81936810

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{23}}^2\times {\mathrm{1721}}^1$

素因数の和:1780

約数の個数: 72

約数和(自身を含む): 222830244

約数和(自身を除く): 140893434

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 30, 45, 46, 69, 90, 115, 138, 207, 230, 345, 414, 529, 690, 1035, 1058, 1587, 1721, 2070, 2645, 3174, 3442, 4761, 5163, 5290, 7935, 8605, 9522, 10326, 15489, 15870, 17210, 23805, 25815, 30978, 39583, 47610, 51630, 77445, 79166, 118749, 154890, 197915, 237498, 356247, 395830, 593745, 712494, 910409, 1187490, 1781235, 1820818, 2731227, 3562470, 4552045, 5462454, 8193681, 9104090, 13656135, 16387362, 27312270, 40968405, 81936810]

約数ペア:

[(1, 81936810), (2, 40968405), (3, 27312270), (5, 16387362), (6, 13656135), (9, 9104090), (10, 8193681), (15, 5462454), (18, 4552045), (23, 3562470), (30, 2731227), (45, 1820818), (46, 1781235), (69, 1187490), (90, 910409), (115, 712494), (138, 593745), (207, 395830), (230, 356247), (345, 237498), (414, 197915), (529, 154890), (690, 118749), (1035, 79166), (1058, 77445), (1587, 51630), (1721, 47610), (2070, 39583), (2645, 30978), (3174, 25815), (3442, 23805), (4761, 17210), (5163, 15870), (5290, 15489), (7935, 10326), (8605, 9522)]