83980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:58

約数の個数: 48

約数和(自身を含む): 211680

約数和(自身を除く): 127700

約数列:

[1, 2, 4, 5, 10, 13, 17, 19, 20, 26, 34, 38, 52, 65, 68, 76, 85, 95, 130, 170, 190, 221, 247, 260, 323, 340, 380, 442, 494, 646, 884, 988, 1105, 1235, 1292, 1615, 2210, 2470, 3230, 4199, 4420, 4940, 6460, 8398, 16796, 20995, 41990, 83980]

約数ペア:

[(1, 83980), (2, 41990), (4, 20995), (5, 16796), (10, 8398), (13, 6460), (17, 4940), (19, 4420), (20, 4199), (26, 3230), (34, 2470), (38, 2210), (52, 1615), (65, 1292), (68, 1235), (76, 1105), (85, 988), (95, 884), (130, 646), (170, 494), (190, 442), (221, 380), (247, 340), (260, 323)]