18954728

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:258

約数の個数: 64

約数和(自身を含む): 41368320

約数和(自身を除く): 22413592

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 71, 104, 136, 142, 151, 221, 284, 302, 442, 568, 604, 884, 923, 1207, 1208, 1768, 1846, 1963, 2414, 2567, 3692, 3926, 4828, 5134, 7384, 7852, 9656, 10268, 10721, 15691, 15704, 20536, 21442, 31382, 33371, 42884, 62764, 66742, 85768, 125528, 133484, 139373, 182257, 266968, 278746, 364514, 557492, 729028, 1114984, 1458056, 2369341, 4738682, 9477364, 18954728]

約数ペア:

[(1, 18954728), (2, 9477364), (4, 4738682), (8, 2369341), (13, 1458056), (17, 1114984), (26, 729028), (34, 557492), (52, 364514), (68, 278746), (71, 266968), (104, 182257), (136, 139373), (142, 133484), (151, 125528), (221, 85768), (284, 66742), (302, 62764), (442, 42884), (568, 33371), (604, 31382), (884, 21442), (923, 20536), (1207, 15704), (1208, 15691), (1768, 10721), (1846, 10268), (1963, 9656), (2414, 7852), (2567, 7384), (3692, 5134), (3926, 4828)]