31421440

素因数分解:

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

素因数の和:80

約数の個数: 132

約数和(自身を含む): 84229956

約数和(自身を除く): 52808516

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 32, 34, 38, 40, 64, 68, 76, 80, 85, 95, 128, 136, 152, 160, 170, 190, 256, 272, 304, 320, 323, 340, 361, 380, 512, 544, 608, 640, 646, 680, 722, 760, 1024, 1088, 1216, 1280, 1292, 1360, 1444, 1520, 1615, 1805, 2176, 2432, 2560, 2584, 2720, 2888, 3040, 3230, 3610, 4352, 4864, 5120, 5168, 5440, 5776, 6080, 6137, 6460, 7220, 8704, 9728, 10336, 10880, 11552, 12160, 12274, 12920, 14440, 17408, 19456, 20672, 21760, 23104, 24320, 24548, 25840, 28880, 30685, 41344, 43520, 46208, 48640, 49096, 51680, 57760, 61370, 82688, 87040, 92416, 97280, 98192, 103360, 115520, 122740, 165376, 184832, 196384, 206720, 231040, 245480, 330752, 369664, 392768, 413440, 462080, 490960, 785536, 826880, 924160, 981920, 1571072, 1653760, 1848320, 1963840, 3142144, 3927680, 6284288, 7855360, 15710720, 31421440]

約数ペア:

[(1, 31421440), (2, 15710720), (4, 7855360), (5, 6284288), (8, 3927680), (10, 3142144), (16, 1963840), (17, 1848320), (19, 1653760), (20, 1571072), (32, 981920), (34, 924160), (38, 826880), (40, 785536), (64, 490960), (68, 462080), (76, 413440), (80, 392768), (85, 369664), (95, 330752), (128, 245480), (136, 231040), (152, 206720), (160, 196384), (170, 184832), (190, 165376), (256, 122740), (272, 115520), (304, 103360), (320, 98192), (323, 97280), (340, 92416), (361, 87040), (380, 82688), (512, 61370), (544, 57760), (608, 51680), (640, 49096), (646, 48640), (680, 46208), (722, 43520), (760, 41344), (1024, 30685), (1088, 28880), (1216, 25840), (1280, 24548), (1292, 24320), (1360, 23104), (1444, 21760), (1520, 20672), (1615, 19456), (1805, 17408), (2176, 14440), (2432, 12920), (2560, 12274), (2584, 12160), (2720, 11552), (2888, 10880), (3040, 10336), (3230, 9728), (3610, 8704), (4352, 7220), (4864, 6460), (5120, 6137), (5168, 6080), (5440, 5776)]