400995452

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{631}}^1$

素因数の和:771

約数の個数: 72

約数和(自身を含む): 840223776

約数和(自身を除く): 439228324

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 101, 121, 143, 202, 242, 286, 404, 484, 572, 631, 1111, 1262, 1313, 1573, 2222, 2524, 2626, 3146, 4444, 5252, 6292, 6941, 8203, 12221, 13882, 14443, 16406, 24442, 27764, 28886, 32812, 48884, 57772, 63731, 76351, 90233, 127462, 152702, 158873, 180466, 254924, 305404, 317746, 360932, 635492, 701041, 828503, 992563, 1402082, 1657006, 1985126, 2804164, 3314012, 3970252, 7711451, 9113533, 15422902, 18227066, 30845804, 36454132, 100248863, 200497726, 400995452]

約数ペア:

[(1, 400995452), (2, 200497726), (4, 100248863), (11, 36454132), (13, 30845804), (22, 18227066), (26, 15422902), (44, 9113533), (52, 7711451), (101, 3970252), (121, 3314012), (143, 2804164), (202, 1985126), (242, 1657006), (286, 1402082), (404, 992563), (484, 828503), (572, 701041), (631, 635492), (1111, 360932), (1262, 317746), (1313, 305404), (1573, 254924), (2222, 180466), (2524, 158873), (2626, 152702), (3146, 127462), (4444, 90233), (5252, 76351), (6292, 63731), (6941, 57772), (8203, 48884), (12221, 32812), (13882, 28886), (14443, 27764), (16406, 24442)]