260890240

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31357}}^1$

素因数の和:31389

約数の個数: 64

約数和(自身を含む): 671688360

約数和(自身を除く): 410798120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 4160, 8320, 31357, 62714, 125428, 156785, 250856, 313570, 407641, 501712, 627140, 815282, 1003424, 1254280, 1630564, 2006848, 2038205, 2508560, 3261128, 4013696, 4076410, 5017120, 6522256, 8152820, 10034240, 13044512, 16305640, 20068480, 26089024, 32611280, 52178048, 65222560, 130445120, 260890240]

約数ペア:

[(1, 260890240), (2, 130445120), (4, 65222560), (5, 52178048), (8, 32611280), (10, 26089024), (13, 20068480), (16, 16305640), (20, 13044512), (26, 10034240), (32, 8152820), (40, 6522256), (52, 5017120), (64, 4076410), (65, 4013696), (80, 3261128), (104, 2508560), (128, 2038205), (130, 2006848), (160, 1630564), (208, 1254280), (260, 1003424), (320, 815282), (416, 627140), (520, 501712), (640, 407641), (832, 313570), (1040, 250856), (1664, 156785), (2080, 125428), (4160, 62714), (8320, 31357)]