18809960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{593}}^1$

素因数の和:678

約数の個数: 64

約数和(自身を含む): 46403280

約数和(自身を除く): 27593320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 61, 65, 104, 122, 130, 244, 260, 305, 488, 520, 593, 610, 793, 1186, 1220, 1586, 2372, 2440, 2965, 3172, 3965, 4744, 5930, 6344, 7709, 7930, 11860, 15418, 15860, 23720, 30836, 31720, 36173, 38545, 61672, 72346, 77090, 144692, 154180, 180865, 289384, 308360, 361730, 470249, 723460, 940498, 1446920, 1880996, 2351245, 3761992, 4702490, 9404980, 18809960]

約数ペア:

[(1, 18809960), (2, 9404980), (4, 4702490), (5, 3761992), (8, 2351245), (10, 1880996), (13, 1446920), (20, 940498), (26, 723460), (40, 470249), (52, 361730), (61, 308360), (65, 289384), (104, 180865), (122, 154180), (130, 144692), (244, 77090), (260, 72346), (305, 61672), (488, 38545), (520, 36173), (593, 31720), (610, 30836), (793, 23720), (1186, 15860), (1220, 15418), (1586, 11860), (2372, 7930), (2440, 7709), (2965, 6344), (3172, 5930), (3965, 4744)]