1647980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:194

約数の個数: 48

約数和(自身を含む): 3792096

約数和(自身を除く): 2144116

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 37, 68, 74, 85, 131, 148, 170, 185, 262, 340, 370, 524, 629, 655, 740, 1258, 1310, 2227, 2516, 2620, 3145, 4454, 4847, 6290, 8908, 9694, 11135, 12580, 19388, 22270, 24235, 44540, 48470, 82399, 96940, 164798, 329596, 411995, 823990, 1647980]

約数ペア:

[(1, 1647980), (2, 823990), (4, 411995), (5, 329596), (10, 164798), (17, 96940), (20, 82399), (34, 48470), (37, 44540), (68, 24235), (74, 22270), (85, 19388), (131, 12580), (148, 11135), (170, 9694), (185, 8908), (262, 6290), (340, 4847), (370, 4454), (524, 3145), (629, 2620), (655, 2516), (740, 2227), (1258, 1310)]