278399940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{50989}}^1$

素因数の和:51021

約数の個数: 96

約数和(自身を含む): 959427840

約数和(自身を除く): 681027900

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 52, 60, 65, 70, 78, 84, 91, 105, 130, 140, 156, 182, 195, 210, 260, 273, 364, 390, 420, 455, 546, 780, 910, 1092, 1365, 1820, 2730, 5460, 50989, 101978, 152967, 203956, 254945, 305934, 356923, 509890, 611868, 662857, 713846, 764835, 1019780, 1070769, 1325714, 1427692, 1529670, 1784615, 1988571, 2141538, 2651428, 3059340, 3314285, 3569230, 3977142, 4283076, 4639999, 5353845, 6628570, 7138460, 7954284, 9279998, 9942855, 10707690, 13257140, 13919997, 18559996, 19885710, 21415380, 23199995, 27839994, 39771420, 46399990, 55679988, 69599985, 92799980, 139199970, 278399940]

約数ペア:

[(1, 278399940), (2, 139199970), (3, 92799980), (4, 69599985), (5, 55679988), (6, 46399990), (7, 39771420), (10, 27839994), (12, 23199995), (13, 21415380), (14, 19885710), (15, 18559996), (20, 13919997), (21, 13257140), (26, 10707690), (28, 9942855), (30, 9279998), (35, 7954284), (39, 7138460), (42, 6628570), (52, 5353845), (60, 4639999), (65, 4283076), (70, 3977142), (78, 3569230), (84, 3314285), (91, 3059340), (105, 2651428), (130, 2141538), (140, 1988571), (156, 1784615), (182, 1529670), (195, 1427692), (210, 1325714), (260, 1070769), (273, 1019780), (364, 764835), (390, 713846), (420, 662857), (455, 611868), (546, 509890), (780, 356923), (910, 305934), (1092, 254945), (1365, 203956), (1820, 152967), (2730, 101978), (5460, 50989)]