20650240

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1$

素因数の和:124

約数の個数: 144

約数和(自身を含む): 57174768

約数和(自身を除く): 36524528

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 64, 65, 68, 73, 80, 85, 104, 128, 130, 136, 146, 160, 170, 208, 221, 256, 260, 272, 292, 320, 340, 365, 416, 442, 520, 544, 584, 640, 680, 730, 832, 884, 949, 1040, 1088, 1105, 1168, 1241, 1280, 1360, 1460, 1664, 1768, 1898, 2080, 2176, 2210, 2336, 2482, 2720, 2920, 3328, 3536, 3796, 4160, 4352, 4420, 4672, 4745, 4964, 5440, 5840, 6205, 7072, 7592, 8320, 8840, 9344, 9490, 9928, 10880, 11680, 12410, 14144, 15184, 16133, 16640, 17680, 18688, 18980, 19856, 21760, 23360, 24820, 28288, 30368, 32266, 35360, 37960, 39712, 46720, 49640, 56576, 60736, 64532, 70720, 75920, 79424, 80665, 93440, 99280, 121472, 129064, 141440, 151840, 158848, 161330, 198560, 242944, 258128, 282880, 303680, 317696, 322660, 397120, 516256, 607360, 645320, 794240, 1032512, 1214720, 1290640, 1588480, 2065024, 2581280, 4130048, 5162560, 10325120, 20650240]

約数ペア:

[(1, 20650240), (2, 10325120), (4, 5162560), (5, 4130048), (8, 2581280), (10, 2065024), (13, 1588480), (16, 1290640), (17, 1214720), (20, 1032512), (26, 794240), (32, 645320), (34, 607360), (40, 516256), (52, 397120), (64, 322660), (65, 317696), (68, 303680), (73, 282880), (80, 258128), (85, 242944), (104, 198560), (128, 161330), (130, 158848), (136, 151840), (146, 141440), (160, 129064), (170, 121472), (208, 99280), (221, 93440), (256, 80665), (260, 79424), (272, 75920), (292, 70720), (320, 64532), (340, 60736), (365, 56576), (416, 49640), (442, 46720), (520, 39712), (544, 37960), (584, 35360), (640, 32266), (680, 30368), (730, 28288), (832, 24820), (884, 23360), (949, 21760), (1040, 19856), (1088, 18980), (1105, 18688), (1168, 17680), (1241, 16640), (1280, 16133), (1360, 15184), (1460, 14144), (1664, 12410), (1768, 11680), (1898, 10880), (2080, 9928), (2176, 9490), (2210, 9344), (2336, 8840), (2482, 8320), (2720, 7592), (2920, 7072), (3328, 6205), (3536, 5840), (3796, 5440), (4160, 4964), (4352, 4745), (4420, 4672)]