20128340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1117}}^1$

素因数の和:1196

約数の個数: 48

約数和(自身を含む): 45641232

約数和(自身を除く): 25512892

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 53, 68, 85, 106, 170, 212, 265, 340, 530, 901, 1060, 1117, 1802, 2234, 3604, 4468, 4505, 5585, 9010, 11170, 18020, 18989, 22340, 37978, 59201, 75956, 94945, 118402, 189890, 236804, 296005, 379780, 592010, 1006417, 1184020, 2012834, 4025668, 5032085, 10064170, 20128340]

約数ペア:

[(1, 20128340), (2, 10064170), (4, 5032085), (5, 4025668), (10, 2012834), (17, 1184020), (20, 1006417), (34, 592010), (53, 379780), (68, 296005), (85, 236804), (106, 189890), (170, 118402), (212, 94945), (265, 75956), (340, 59201), (530, 37978), (901, 22340), (1060, 18989), (1117, 18020), (1802, 11170), (2234, 9010), (3604, 5585), (4468, 4505)]