278638920

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{36857}}^1$

素因数の和:36884

約数の個数: 128

約数和(自身を含む): 1061510400

約数和(自身を除く): 782871480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 84, 90, 105, 108, 120, 126, 135, 140, 168, 180, 189, 210, 216, 252, 270, 280, 315, 360, 378, 420, 504, 540, 630, 756, 840, 945, 1080, 1260, 1512, 1890, 2520, 3780, 7560, 36857, 73714, 110571, 147428, 184285, 221142, 257999, 294856, 331713, 368570, 442284, 515998, 552855, 663426, 737140, 773997, 884568, 995139, 1031996, 1105710, 1289995, 1326852, 1474280, 1547994, 1658565, 1990278, 2063992, 2211420, 2321991, 2579990, 2653704, 3095988, 3317130, 3869985, 3980556, 4422840, 4643982, 4975695, 5159980, 6191976, 6634260, 6965973, 7739970, 7961112, 9287964, 9951390, 10319960, 11609955, 13268520, 13931946, 15479940, 18575928, 19902780, 23219910, 27863892, 30959880, 34829865, 39805560, 46439820, 55727784, 69659730, 92879640, 139319460, 278638920]

約数ペア:

[(1, 278638920), (2, 139319460), (3, 92879640), (4, 69659730), (5, 55727784), (6, 46439820), (7, 39805560), (8, 34829865), (9, 30959880), (10, 27863892), (12, 23219910), (14, 19902780), (15, 18575928), (18, 15479940), (20, 13931946), (21, 13268520), (24, 11609955), (27, 10319960), (28, 9951390), (30, 9287964), (35, 7961112), (36, 7739970), (40, 6965973), (42, 6634260), (45, 6191976), (54, 5159980), (56, 4975695), (60, 4643982), (63, 4422840), (70, 3980556), (72, 3869985), (84, 3317130), (90, 3095988), (105, 2653704), (108, 2579990), (120, 2321991), (126, 2211420), (135, 2063992), (140, 1990278), (168, 1658565), (180, 1547994), (189, 1474280), (210, 1326852), (216, 1289995), (252, 1105710), (270, 1031996), (280, 995139), (315, 884568), (360, 773997), (378, 737140), (420, 663426), (504, 552855), (540, 515998), (630, 442284), (756, 368570), (840, 331713), (945, 294856), (1080, 257999), (1260, 221142), (1512, 184285), (1890, 147428), (2520, 110571), (3780, 73714), (7560, 36857)]