20316320

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:238

約数の個数: 96

約数和(自身を含む): 52073280

約数和(自身を除く): 31756960

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 41, 76, 80, 82, 95, 152, 160, 163, 164, 190, 205, 304, 326, 328, 380, 410, 608, 652, 656, 760, 779, 815, 820, 1304, 1312, 1520, 1558, 1630, 1640, 2608, 3040, 3097, 3116, 3260, 3280, 3895, 5216, 6194, 6232, 6520, 6560, 6683, 7790, 12388, 12464, 13040, 13366, 15485, 15580, 24776, 24928, 26080, 26732, 30970, 31160, 33415, 49552, 53464, 61940, 62320, 66830, 99104, 106928, 123880, 124640, 126977, 133660, 213856, 247760, 253954, 267320, 495520, 507908, 534640, 634885, 1015816, 1069280, 1269770, 2031632, 2539540, 4063264, 5079080, 10158160, 20316320]

約数ペア:

[(1, 20316320), (2, 10158160), (4, 5079080), (5, 4063264), (8, 2539540), (10, 2031632), (16, 1269770), (19, 1069280), (20, 1015816), (32, 634885), (38, 534640), (40, 507908), (41, 495520), (76, 267320), (80, 253954), (82, 247760), (95, 213856), (152, 133660), (160, 126977), (163, 124640), (164, 123880), (190, 106928), (205, 99104), (304, 66830), (326, 62320), (328, 61940), (380, 53464), (410, 49552), (608, 33415), (652, 31160), (656, 30970), (760, 26732), (779, 26080), (815, 24928), (820, 24776), (1304, 15580), (1312, 15485), (1520, 13366), (1558, 13040), (1630, 12464), (1640, 12388), (2608, 7790), (3040, 6683), (3097, 6560), (3116, 6520), (3260, 6232), (3280, 6194), (3895, 5216)]