8991990

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{2039}}^1$

素因数の和:2066

約数の個数: 72

約数和(自身を含む): 27209520

約数和(自身を除く): 18217530

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 63, 70, 90, 98, 105, 126, 147, 210, 245, 294, 315, 441, 490, 630, 735, 882, 1470, 2039, 2205, 4078, 4410, 6117, 10195, 12234, 14273, 18351, 20390, 28546, 30585, 36702, 42819, 61170, 71365, 85638, 91755, 99911, 128457, 142730, 183510, 199822, 214095, 256914, 299733, 428190, 499555, 599466, 642285, 899199, 999110, 1284570, 1498665, 1798398, 2997330, 4495995, 8991990]

約数ペア:

[(1, 8991990), (2, 4495995), (3, 2997330), (5, 1798398), (6, 1498665), (7, 1284570), (9, 999110), (10, 899199), (14, 642285), (15, 599466), (18, 499555), (21, 428190), (30, 299733), (35, 256914), (42, 214095), (45, 199822), (49, 183510), (63, 142730), (70, 128457), (90, 99911), (98, 91755), (105, 85638), (126, 71365), (147, 61170), (210, 42819), (245, 36702), (294, 30585), (315, 28546), (441, 20390), (490, 18351), (630, 14273), (735, 12234), (882, 10195), (1470, 6117), (2039, 4410), (2205, 4078)]