51278960

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^2$

素因数の和:127

約数の個数: 120

約数和(自身を含む): 132982560

約数和(自身を除く): 81703600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 29, 31, 40, 46, 58, 62, 80, 92, 115, 116, 124, 145, 155, 184, 230, 232, 248, 290, 310, 368, 460, 464, 496, 580, 620, 667, 713, 899, 920, 961, 1160, 1240, 1334, 1426, 1798, 1840, 1922, 2320, 2480, 2668, 2852, 3335, 3565, 3596, 3844, 4495, 4805, 5336, 5704, 6670, 7130, 7192, 7688, 8990, 9610, 10672, 11408, 13340, 14260, 14384, 15376, 17980, 19220, 20677, 22103, 26680, 27869, 28520, 35960, 38440, 41354, 44206, 53360, 55738, 57040, 71920, 76880, 82708, 88412, 103385, 110515, 111476, 139345, 165416, 176824, 206770, 221030, 222952, 278690, 330832, 353648, 413540, 442060, 445904, 557380, 640987, 827080, 884120, 1114760, 1281974, 1654160, 1768240, 2229520, 2563948, 3204935, 5127896, 6409870, 10255792, 12819740, 25639480, 51278960]

約数ペア:

[(1, 51278960), (2, 25639480), (4, 12819740), (5, 10255792), (8, 6409870), (10, 5127896), (16, 3204935), (20, 2563948), (23, 2229520), (29, 1768240), (31, 1654160), (40, 1281974), (46, 1114760), (58, 884120), (62, 827080), (80, 640987), (92, 557380), (115, 445904), (116, 442060), (124, 413540), (145, 353648), (155, 330832), (184, 278690), (230, 222952), (232, 221030), (248, 206770), (290, 176824), (310, 165416), (368, 139345), (460, 111476), (464, 110515), (496, 103385), (580, 88412), (620, 82708), (667, 76880), (713, 71920), (899, 57040), (920, 55738), (961, 53360), (1160, 44206), (1240, 41354), (1334, 38440), (1426, 35960), (1798, 28520), (1840, 27869), (1922, 26680), (2320, 22103), (2480, 20677), (2668, 19220), (2852, 17980), (3335, 15376), (3565, 14384), (3596, 14260), (3844, 13340), (4495, 11408), (4805, 10672), (5336, 9610), (5704, 8990), (6670, 7688), (7130, 7192)]