81839940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{1153}}^1$

素因数の和:1198

約数の個数: 144

約数和(自身を含む): 283828608

約数和(自身を除く): 201988668

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, 169, 182, 195, 210, 260, 273, 338, 364, 390, 420, 455, 507, 546, 676, 780, 845, 910, 1014, 1092, 1153, 1183, 1365, 1690, 1820, 2028, 2306, 2366, 2535, 2730, 3380, 3459, 3549, 4612, 4732, 5070, 5460, 5765, 5915, 6918, 7098, 8071, 10140, 11530, 11830, 13836, 14196, 14989, 16142, 17295, 17745, 23060, 23660, 24213, 29978, 32284, 34590, 35490, 40355, 44967, 48426, 59956, 69180, 70980, 74945, 80710, 89934, 96852, 104923, 121065, 149890, 161420, 179868, 194857, 209846, 224835, 242130, 299780, 314769, 389714, 419692, 449670, 484260, 524615, 584571, 629538, 779428, 899340, 974285, 1049230, 1169142, 1259076, 1363999, 1573845, 1948570, 2098460, 2338284, 2727998, 2922855, 3147690, 3897140, 4091997, 5455996, 5845710, 6295380, 6819995, 8183994, 11691420, 13639990, 16367988, 20459985, 27279980, 40919970, 81839940]

約数ペア:

[(1, 81839940), (2, 40919970), (3, 27279980), (4, 20459985), (5, 16367988), (6, 13639990), (7, 11691420), (10, 8183994), (12, 6819995), (13, 6295380), (14, 5845710), (15, 5455996), (20, 4091997), (21, 3897140), (26, 3147690), (28, 2922855), (30, 2727998), (35, 2338284), (39, 2098460), (42, 1948570), (52, 1573845), (60, 1363999), (65, 1259076), (70, 1169142), (78, 1049230), (84, 974285), (91, 899340), (105, 779428), (130, 629538), (140, 584571), (156, 524615), (169, 484260), (182, 449670), (195, 419692), (210, 389714), (260, 314769), (273, 299780), (338, 242130), (364, 224835), (390, 209846), (420, 194857), (455, 179868), (507, 161420), (546, 149890), (676, 121065), (780, 104923), (845, 96852), (910, 89934), (1014, 80710), (1092, 74945), (1153, 70980), (1183, 69180), (1365, 59956), (1690, 48426), (1820, 44967), (2028, 40355), (2306, 35490), (2366, 34590), (2535, 32284), (2730, 29978), (3380, 24213), (3459, 23660), (3549, 23060), (4612, 17745), (4732, 17295), (5070, 16142), (5460, 14989), (5765, 14196), (5915, 13836), (6918, 11830), (7098, 11530), (8071, 10140)]