19518928

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{449}}^1$

素因数の和:500

約数の個数: 80

約数和(自身を含む): 46872000

約数和(自身を除く): 27353072

約数列:

[1, 2, 4, 8, 11, 13, 16, 19, 22, 26, 38, 44, 52, 76, 88, 104, 143, 152, 176, 208, 209, 247, 286, 304, 418, 449, 494, 572, 836, 898, 988, 1144, 1672, 1796, 1976, 2288, 2717, 3344, 3592, 3952, 4939, 5434, 5837, 7184, 8531, 9878, 10868, 11674, 17062, 19756, 21736, 23348, 34124, 39512, 43472, 46696, 64207, 68248, 79024, 93392, 93841, 110903, 128414, 136496, 187682, 221806, 256828, 375364, 443612, 513656, 750728, 887224, 1027312, 1219933, 1501456, 1774448, 2439866, 4879732, 9759464, 19518928]

約数ペア:

[(1, 19518928), (2, 9759464), (4, 4879732), (8, 2439866), (11, 1774448), (13, 1501456), (16, 1219933), (19, 1027312), (22, 887224), (26, 750728), (38, 513656), (44, 443612), (52, 375364), (76, 256828), (88, 221806), (104, 187682), (143, 136496), (152, 128414), (176, 110903), (208, 93841), (209, 93392), (247, 79024), (286, 68248), (304, 64207), (418, 46696), (449, 43472), (494, 39512), (572, 34124), (836, 23348), (898, 21736), (988, 19756), (1144, 17062), (1672, 11674), (1796, 10868), (1976, 9878), (2288, 8531), (2717, 7184), (3344, 5837), (3592, 5434), (3952, 4939)]