8871940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{823}}^1$

素因数の和:857

約数の個数: 72

約数和(自身を含む): 23671872

約数和(自身を除く): 14799932

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 823, 980, 1078, 1540, 1646, 2156, 2695, 3292, 4115, 5390, 5761, 8230, 9053, 10780, 11522, 16460, 18106, 23044, 28805, 36212, 40327, 45265, 57610, 63371, 80654, 90530, 115220, 126742, 161308, 181060, 201635, 253484, 316855, 403270, 443597, 633710, 806540, 887194, 1267420, 1774388, 2217985, 4435970, 8871940]

約数ペア:

[(1, 8871940), (2, 4435970), (4, 2217985), (5, 1774388), (7, 1267420), (10, 887194), (11, 806540), (14, 633710), (20, 443597), (22, 403270), (28, 316855), (35, 253484), (44, 201635), (49, 181060), (55, 161308), (70, 126742), (77, 115220), (98, 90530), (110, 80654), (140, 63371), (154, 57610), (196, 45265), (220, 40327), (245, 36212), (308, 28805), (385, 23044), (490, 18106), (539, 16460), (770, 11522), (823, 10780), (980, 9053), (1078, 8230), (1540, 5761), (1646, 5390), (2156, 4115), (2695, 3292)]