421265720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:349

約数の個数: 128

約数和(自身を含む): 1044057600

約数和(自身を除く): 622791880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 37, 38, 40, 71, 74, 76, 95, 142, 148, 152, 185, 190, 211, 284, 296, 355, 370, 380, 422, 568, 703, 710, 740, 760, 844, 1055, 1349, 1406, 1420, 1480, 1688, 2110, 2627, 2698, 2812, 2840, 3515, 4009, 4220, 5254, 5396, 5624, 6745, 7030, 7807, 8018, 8440, 10508, 10792, 13135, 13490, 14060, 14981, 15614, 16036, 20045, 21016, 26270, 26980, 28120, 29962, 31228, 32072, 39035, 40090, 49913, 52540, 53960, 59924, 62456, 74905, 78070, 80180, 99826, 105080, 119848, 148333, 149810, 156140, 160360, 199652, 249565, 284639, 296666, 299620, 312280, 399304, 499130, 554297, 569278, 593332, 599240, 741665, 998260, 1108594, 1138556, 1186664, 1423195, 1483330, 1996520, 2217188, 2277112, 2771485, 2846390, 2966660, 4434376, 5542970, 5692780, 5933320, 10531643, 11085940, 11385560, 21063286, 22171880, 42126572, 52658215, 84253144, 105316430, 210632860, 421265720]

約数ペア:

[(1, 421265720), (2, 210632860), (4, 105316430), (5, 84253144), (8, 52658215), (10, 42126572), (19, 22171880), (20, 21063286), (37, 11385560), (38, 11085940), (40, 10531643), (71, 5933320), (74, 5692780), (76, 5542970), (95, 4434376), (142, 2966660), (148, 2846390), (152, 2771485), (185, 2277112), (190, 2217188), (211, 1996520), (284, 1483330), (296, 1423195), (355, 1186664), (370, 1138556), (380, 1108594), (422, 998260), (568, 741665), (703, 599240), (710, 593332), (740, 569278), (760, 554297), (844, 499130), (1055, 399304), (1349, 312280), (1406, 299620), (1420, 296666), (1480, 284639), (1688, 249565), (2110, 199652), (2627, 160360), (2698, 156140), (2812, 149810), (2840, 148333), (3515, 119848), (4009, 105080), (4220, 99826), (5254, 80180), (5396, 78070), (5624, 74905), (6745, 62456), (7030, 59924), (7807, 53960), (8018, 52540), (8440, 49913), (10508, 40090), (10792, 39035), (13135, 32072), (13490, 31228), (14060, 29962), (14981, 28120), (15614, 26980), (16036, 26270), (20045, 21016)]