19868680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2011}}^1$

素因数の和:2054

約数の個数: 64

約数和(自身を含む): 50702400

約数和(自身を除く): 30833720

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2011, 2470, 4022, 4940, 8044, 9880, 10055, 16088, 20110, 26143, 38209, 40220, 52286, 76418, 80440, 104572, 130715, 152836, 191045, 209144, 261430, 305672, 382090, 496717, 522860, 764180, 993434, 1045720, 1528360, 1986868, 2483585, 3973736, 4967170, 9934340, 19868680]

約数ペア:

[(1, 19868680), (2, 9934340), (4, 4967170), (5, 3973736), (8, 2483585), (10, 1986868), (13, 1528360), (19, 1045720), (20, 993434), (26, 764180), (38, 522860), (40, 496717), (52, 382090), (65, 305672), (76, 261430), (95, 209144), (104, 191045), (130, 152836), (152, 130715), (190, 104572), (247, 80440), (260, 76418), (380, 52286), (494, 40220), (520, 38209), (760, 26143), (988, 20110), (1235, 16088), (1976, 10055), (2011, 9880), (2470, 8044), (4022, 4940)]