21498880

素因数分解:

$2^{10}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:74

約数の個数: 176

約数和(自身を含む): 61901280

約数和(自身を除く): 40402400

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 19, 20, 26, 32, 34, 38, 40, 52, 64, 65, 68, 76, 80, 85, 95, 104, 128, 130, 136, 152, 160, 170, 190, 208, 221, 247, 256, 260, 272, 304, 320, 323, 340, 380, 416, 442, 494, 512, 520, 544, 608, 640, 646, 680, 760, 832, 884, 988, 1024, 1040, 1088, 1105, 1216, 1235, 1280, 1292, 1360, 1520, 1615, 1664, 1768, 1976, 2080, 2176, 2210, 2432, 2470, 2560, 2584, 2720, 3040, 3230, 3328, 3536, 3952, 4160, 4199, 4352, 4420, 4864, 4940, 5120, 5168, 5440, 6080, 6460, 6656, 7072, 7904, 8320, 8398, 8704, 8840, 9728, 9880, 10336, 10880, 12160, 12920, 13312, 14144, 15808, 16640, 16796, 17408, 17680, 19456, 19760, 20672, 20995, 21760, 24320, 25840, 28288, 31616, 33280, 33592, 35360, 39520, 41344, 41990, 43520, 48640, 51680, 56576, 63232, 66560, 67184, 70720, 79040, 82688, 83980, 87040, 97280, 103360, 113152, 126464, 134368, 141440, 158080, 165376, 167960, 206720, 226304, 252928, 268736, 282880, 316160, 330752, 335920, 413440, 537472, 565760, 632320, 671840, 826880, 1074944, 1131520, 1264640, 1343680, 1653760, 2149888, 2687360, 4299776, 5374720, 10749440, 21498880]

約数ペア:

[(1, 21498880), (2, 10749440), (4, 5374720), (5, 4299776), (8, 2687360), (10, 2149888), (13, 1653760), (16, 1343680), (17, 1264640), (19, 1131520), (20, 1074944), (26, 826880), (32, 671840), (34, 632320), (38, 565760), (40, 537472), (52, 413440), (64, 335920), (65, 330752), (68, 316160), (76, 282880), (80, 268736), (85, 252928), (95, 226304), (104, 206720), (128, 167960), (130, 165376), (136, 158080), (152, 141440), (160, 134368), (170, 126464), (190, 113152), (208, 103360), (221, 97280), (247, 87040), (256, 83980), (260, 82688), (272, 79040), (304, 70720), (320, 67184), (323, 66560), (340, 63232), (380, 56576), (416, 51680), (442, 48640), (494, 43520), (512, 41990), (520, 41344), (544, 39520), (608, 35360), (640, 33592), (646, 33280), (680, 31616), (760, 28288), (832, 25840), (884, 24320), (988, 21760), (1024, 20995), (1040, 20672), (1088, 19760), (1105, 19456), (1216, 17680), (1235, 17408), (1280, 16796), (1292, 16640), (1360, 15808), (1520, 14144), (1615, 13312), (1664, 12920), (1768, 12160), (1976, 10880), (2080, 10336), (2176, 9880), (2210, 9728), (2432, 8840), (2470, 8704), (2560, 8398), (2584, 8320), (2720, 7904), (3040, 7072), (3230, 6656), (3328, 6460), (3536, 6080), (3952, 5440), (4160, 5168), (4199, 5120), (4352, 4940), (4420, 4864)]