18443984

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{359}}^1$

素因数の和:412

約数の個数: 60

約数和(自身を含む): 40845600

約数和(自身を除く): 22401616

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 169, 208, 247, 304, 338, 359, 494, 676, 718, 988, 1352, 1436, 1976, 2704, 2872, 3211, 3952, 4667, 5744, 6422, 6821, 9334, 12844, 13642, 18668, 25688, 27284, 37336, 51376, 54568, 60671, 74672, 88673, 109136, 121342, 177346, 242684, 354692, 485368, 709384, 970736, 1152749, 1418768, 2305498, 4610996, 9221992, 18443984]

約数ペア:

[(1, 18443984), (2, 9221992), (4, 4610996), (8, 2305498), (13, 1418768), (16, 1152749), (19, 970736), (26, 709384), (38, 485368), (52, 354692), (76, 242684), (104, 177346), (152, 121342), (169, 109136), (208, 88673), (247, 74672), (304, 60671), (338, 54568), (359, 51376), (494, 37336), (676, 27284), (718, 25688), (988, 18668), (1352, 13642), (1436, 12844), (1976, 9334), (2704, 6821), (2872, 6422), (3211, 5744), (3952, 4667)]