19738420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{853}}^1$

素因数の和:964

約数の個数: 48

約数和(自身を含む): 45193680

約数和(自身を除く): 25455260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 89, 130, 178, 260, 356, 445, 853, 890, 1157, 1706, 1780, 2314, 3412, 4265, 4628, 5785, 8530, 11089, 11570, 17060, 22178, 23140, 44356, 55445, 75917, 110890, 151834, 221780, 303668, 379585, 759170, 986921, 1518340, 1973842, 3947684, 4934605, 9869210, 19738420]

約数ペア:

[(1, 19738420), (2, 9869210), (4, 4934605), (5, 3947684), (10, 1973842), (13, 1518340), (20, 986921), (26, 759170), (52, 379585), (65, 303668), (89, 221780), (130, 151834), (178, 110890), (260, 75917), (356, 55445), (445, 44356), (853, 23140), (890, 22178), (1157, 17060), (1706, 11570), (1780, 11089), (2314, 8530), (3412, 5785), (4265, 4628)]