28911740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{919}}^1$

素因数の和:963

約数の個数: 72

約数和(自身を含む): 71947680

約数和(自身を除く): 43035940

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 121, 130, 143, 220, 242, 260, 286, 484, 572, 605, 715, 919, 1210, 1430, 1573, 1838, 2420, 2860, 3146, 3676, 4595, 6292, 7865, 9190, 10109, 11947, 15730, 18380, 20218, 23894, 31460, 40436, 47788, 50545, 59735, 101090, 111199, 119470, 131417, 202180, 222398, 238940, 262834, 444796, 525668, 555995, 657085, 1111990, 1314170, 1445587, 2223980, 2628340, 2891174, 5782348, 7227935, 14455870, 28911740]

約数ペア:

[(1, 28911740), (2, 14455870), (4, 7227935), (5, 5782348), (10, 2891174), (11, 2628340), (13, 2223980), (20, 1445587), (22, 1314170), (26, 1111990), (44, 657085), (52, 555995), (55, 525668), (65, 444796), (110, 262834), (121, 238940), (130, 222398), (143, 202180), (220, 131417), (242, 119470), (260, 111199), (286, 101090), (484, 59735), (572, 50545), (605, 47788), (715, 40436), (919, 31460), (1210, 23894), (1430, 20218), (1573, 18380), (1838, 15730), (2420, 11947), (2860, 10109), (3146, 9190), (3676, 7865), (4595, 6292)]