245738240

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{563}}^1$

素因数の和:626

約数の個数: 144

約数和(自身を含む): 664022016

約数和(自身を除く): 418283776

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 44, 55, 62, 64, 80, 88, 110, 124, 128, 155, 160, 176, 220, 248, 256, 310, 320, 341, 352, 440, 496, 563, 620, 640, 682, 704, 880, 992, 1126, 1240, 1280, 1364, 1408, 1705, 1760, 1984, 2252, 2480, 2728, 2815, 2816, 3410, 3520, 3968, 4504, 4960, 5456, 5630, 6193, 6820, 7040, 7936, 9008, 9920, 10912, 11260, 12386, 13640, 14080, 17453, 18016, 19840, 21824, 22520, 24772, 27280, 30965, 34906, 36032, 39680, 43648, 45040, 49544, 54560, 61930, 69812, 72064, 87265, 87296, 90080, 99088, 109120, 123860, 139624, 144128, 174530, 180160, 191983, 198176, 218240, 247720, 279248, 349060, 360320, 383966, 396352, 436480, 495440, 558496, 698120, 720640, 767932, 792704, 959915, 990880, 1116992, 1396240, 1535864, 1585408, 1919830, 1981760, 2233984, 2792480, 3071728, 3839660, 3963520, 4467968, 5584960, 6143456, 7679320, 7927040, 11169920, 12286912, 15358640, 22339840, 24573824, 30717280, 49147648, 61434560, 122869120, 245738240]

約数ペア:

[(1, 245738240), (2, 122869120), (4, 61434560), (5, 49147648), (8, 30717280), (10, 24573824), (11, 22339840), (16, 15358640), (20, 12286912), (22, 11169920), (31, 7927040), (32, 7679320), (40, 6143456), (44, 5584960), (55, 4467968), (62, 3963520), (64, 3839660), (80, 3071728), (88, 2792480), (110, 2233984), (124, 1981760), (128, 1919830), (155, 1585408), (160, 1535864), (176, 1396240), (220, 1116992), (248, 990880), (256, 959915), (310, 792704), (320, 767932), (341, 720640), (352, 698120), (440, 558496), (496, 495440), (563, 436480), (620, 396352), (640, 383966), (682, 360320), (704, 349060), (880, 279248), (992, 247720), (1126, 218240), (1240, 198176), (1280, 191983), (1364, 180160), (1408, 174530), (1705, 144128), (1760, 139624), (1984, 123860), (2252, 109120), (2480, 99088), (2728, 90080), (2815, 87296), (2816, 87265), (3410, 72064), (3520, 69812), (3968, 61930), (4504, 54560), (4960, 49544), (5456, 45040), (5630, 43648), (6193, 39680), (6820, 36032), (7040, 34906), (7936, 30965), (9008, 27280), (9920, 24772), (10912, 22520), (11260, 21824), (12386, 19840), (13640, 18016), (14080, 17453)]