407439890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{4013}}^1$

素因数の和:4115

約数の個数: 64

約数和(自身を含む): 873960192

約数和(自身を除く): 466520302

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 71, 110, 130, 142, 143, 286, 355, 710, 715, 781, 923, 1430, 1562, 1846, 3905, 4013, 4615, 7810, 8026, 9230, 10153, 20065, 20306, 40130, 44143, 50765, 52169, 88286, 101530, 104338, 220715, 260845, 284923, 441430, 521690, 569846, 573859, 1147718, 1424615, 2849230, 2869295, 3134153, 3703999, 5738590, 6268306, 7407998, 15670765, 18519995, 31341530, 37039990, 40743989, 81487978, 203719945, 407439890]

約数ペア:

[(1, 407439890), (2, 203719945), (5, 81487978), (10, 40743989), (11, 37039990), (13, 31341530), (22, 18519995), (26, 15670765), (55, 7407998), (65, 6268306), (71, 5738590), (110, 3703999), (130, 3134153), (142, 2869295), (143, 2849230), (286, 1424615), (355, 1147718), (710, 573859), (715, 569846), (781, 521690), (923, 441430), (1430, 284923), (1562, 260845), (1846, 220715), (3905, 104338), (4013, 101530), (4615, 88286), (7810, 52169), (8026, 50765), (9230, 44143), (10153, 40130), (20065, 20306)]