291254920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{163}}^1$

素因数の和:347

約数の個数: 128

約数和(自身を含む): 748154880

約数和(自身を除く): 456899960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 131, 155, 163, 220, 248, 262, 310, 326, 341, 440, 524, 620, 652, 655, 682, 815, 1048, 1240, 1304, 1310, 1364, 1441, 1630, 1705, 1793, 2620, 2728, 2882, 3260, 3410, 3586, 4061, 5053, 5240, 5764, 6520, 6820, 7172, 7205, 8122, 8965, 10106, 11528, 13640, 14344, 14410, 16244, 17930, 20212, 20305, 21353, 25265, 28820, 32488, 35860, 40424, 40610, 42706, 44671, 50530, 55583, 57640, 71720, 81220, 85412, 89342, 101060, 106765, 111166, 162440, 170824, 178684, 202120, 213530, 222332, 223355, 234883, 277915, 357368, 427060, 444664, 446710, 469766, 555830, 661943, 854120, 893420, 939532, 1111660, 1174415, 1323886, 1786840, 1879064, 2223320, 2348830, 2647772, 3309715, 4697660, 5295544, 6619430, 7281373, 9395320, 13238860, 14562746, 26477720, 29125492, 36406865, 58250984, 72813730, 145627460, 291254920]

約数ペア:

[(1, 291254920), (2, 145627460), (4, 72813730), (5, 58250984), (8, 36406865), (10, 29125492), (11, 26477720), (20, 14562746), (22, 13238860), (31, 9395320), (40, 7281373), (44, 6619430), (55, 5295544), (62, 4697660), (88, 3309715), (110, 2647772), (124, 2348830), (131, 2223320), (155, 1879064), (163, 1786840), (220, 1323886), (248, 1174415), (262, 1111660), (310, 939532), (326, 893420), (341, 854120), (440, 661943), (524, 555830), (620, 469766), (652, 446710), (655, 444664), (682, 427060), (815, 357368), (1048, 277915), (1240, 234883), (1304, 223355), (1310, 222332), (1364, 213530), (1441, 202120), (1630, 178684), (1705, 170824), (1793, 162440), (2620, 111166), (2728, 106765), (2882, 101060), (3260, 89342), (3410, 85412), (3586, 81220), (4061, 71720), (5053, 57640), (5240, 55583), (5764, 50530), (6520, 44671), (6820, 42706), (7172, 40610), (7205, 40424), (8122, 35860), (8965, 32488), (10106, 28820), (11528, 25265), (13640, 21353), (14344, 20305), (14410, 20212), (16244, 17930)]