20212010

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{167}}^1$

素因数の和:220

約数の個数: 96

約数和(自身を含む): 48263040

約数和(自身を除く): 28051030

約数列:

[1, 2, 5, 7, 10, 13, 14, 19, 26, 35, 38, 49, 65, 70, 91, 95, 98, 130, 133, 167, 182, 190, 245, 247, 266, 334, 455, 490, 494, 637, 665, 835, 910, 931, 1169, 1235, 1274, 1330, 1670, 1729, 1862, 2171, 2338, 2470, 3173, 3185, 3458, 4342, 4655, 5845, 6346, 6370, 8183, 8645, 9310, 10855, 11690, 12103, 15197, 15865, 16366, 17290, 21710, 22211, 24206, 30394, 31730, 40915, 41249, 44422, 60515, 75985, 81830, 82498, 106379, 111055, 121030, 151970, 155477, 206245, 212758, 222110, 288743, 310954, 412490, 531895, 577486, 777385, 1063790, 1443715, 1554770, 2021201, 2887430, 4042402, 10106005, 20212010]

約数ペア:

[(1, 20212010), (2, 10106005), (5, 4042402), (7, 2887430), (10, 2021201), (13, 1554770), (14, 1443715), (19, 1063790), (26, 777385), (35, 577486), (38, 531895), (49, 412490), (65, 310954), (70, 288743), (91, 222110), (95, 212758), (98, 206245), (130, 155477), (133, 151970), (167, 121030), (182, 111055), (190, 106379), (245, 82498), (247, 81830), (266, 75985), (334, 60515), (455, 44422), (490, 41249), (494, 40915), (637, 31730), (665, 30394), (835, 24206), (910, 22211), (931, 21710), (1169, 17290), (1235, 16366), (1274, 15865), (1330, 15197), (1670, 12103), (1729, 11690), (1862, 10855), (2171, 9310), (2338, 8645), (2470, 8183), (3173, 6370), (3185, 6346), (3458, 5845), (4342, 4655)]