20206880

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:91

約数の個数: 144

約数和(自身を含む): 55702080

約数和(自身を除く): 35495200

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 23, 32, 34, 38, 40, 46, 68, 76, 80, 85, 92, 95, 115, 136, 152, 160, 170, 184, 190, 230, 272, 289, 304, 323, 340, 368, 380, 391, 437, 460, 544, 578, 608, 646, 680, 736, 760, 782, 874, 920, 1156, 1292, 1360, 1445, 1520, 1564, 1615, 1748, 1840, 1955, 2185, 2312, 2584, 2720, 2890, 3040, 3128, 3230, 3496, 3680, 3910, 4370, 4624, 5168, 5491, 5780, 6256, 6460, 6647, 6992, 7429, 7820, 8740, 9248, 10336, 10982, 11560, 12512, 12920, 13294, 13984, 14858, 15640, 17480, 21964, 23120, 25840, 26588, 27455, 29716, 31280, 33235, 34960, 37145, 43928, 46240, 51680, 53176, 54910, 59432, 62560, 66470, 69920, 74290, 87856, 106352, 109820, 118864, 126293, 132940, 148580, 175712, 212704, 219640, 237728, 252586, 265880, 297160, 439280, 505172, 531760, 594320, 631465, 878560, 1010344, 1063520, 1188640, 1262930, 2020688, 2525860, 4041376, 5051720, 10103440, 20206880]

約数ペア:

[(1, 20206880), (2, 10103440), (4, 5051720), (5, 4041376), (8, 2525860), (10, 2020688), (16, 1262930), (17, 1188640), (19, 1063520), (20, 1010344), (23, 878560), (32, 631465), (34, 594320), (38, 531760), (40, 505172), (46, 439280), (68, 297160), (76, 265880), (80, 252586), (85, 237728), (92, 219640), (95, 212704), (115, 175712), (136, 148580), (152, 132940), (160, 126293), (170, 118864), (184, 109820), (190, 106352), (230, 87856), (272, 74290), (289, 69920), (304, 66470), (323, 62560), (340, 59432), (368, 54910), (380, 53176), (391, 51680), (437, 46240), (460, 43928), (544, 37145), (578, 34960), (608, 33235), (646, 31280), (680, 29716), (736, 27455), (760, 26588), (782, 25840), (874, 23120), (920, 21964), (1156, 17480), (1292, 15640), (1360, 14858), (1445, 13984), (1520, 13294), (1564, 12920), (1615, 12512), (1748, 11560), (1840, 10982), (1955, 10336), (2185, 9248), (2312, 8740), (2584, 7820), (2720, 7429), (2890, 6992), (3040, 6647), (3128, 6460), (3230, 6256), (3496, 5780), (3680, 5491), (3910, 5168), (4370, 4624)]