21073180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{829}}^1$

素因数の和:910

約数の個数: 48

約数和(自身を含む): 46851840

約数和(自身を除く): 25778660

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 410, 620, 820, 829, 1271, 1658, 2542, 3316, 4145, 5084, 6355, 8290, 12710, 16580, 25420, 25699, 33989, 51398, 67978, 102796, 128495, 135956, 169945, 256990, 339890, 513980, 679780, 1053659, 2107318, 4214636, 5268295, 10536590, 21073180]

約数ペア:

[(1, 21073180), (2, 10536590), (4, 5268295), (5, 4214636), (10, 2107318), (20, 1053659), (31, 679780), (41, 513980), (62, 339890), (82, 256990), (124, 169945), (155, 135956), (164, 128495), (205, 102796), (310, 67978), (410, 51398), (620, 33989), (820, 25699), (829, 25420), (1271, 16580), (1658, 12710), (2542, 8290), (3316, 6355), (4145, 5084)]