1871940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{4457}}^1$

素因数の和:4476

約数の個数: 48

約数和(自身を含む): 5991552

約数和(自身を除く): 4119612

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 4457, 8914, 13371, 17828, 22285, 26742, 31199, 44570, 53484, 62398, 66855, 89140, 93597, 124796, 133710, 155995, 187194, 267420, 311990, 374388, 467985, 623980, 935970, 1871940]

約数ペア:

[(1, 1871940), (2, 935970), (3, 623980), (4, 467985), (5, 374388), (6, 311990), (7, 267420), (10, 187194), (12, 155995), (14, 133710), (15, 124796), (20, 93597), (21, 89140), (28, 66855), (30, 62398), (35, 53484), (42, 44570), (60, 31199), (70, 26742), (84, 22285), (105, 17828), (140, 13371), (210, 8914), (420, 4457)]