25235990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{601}}^1$

素因数の和:657

約数の個数: 64

約数和(自身を含む): 54613440

約数和(自身を除く): 29377450

約数列:

[1, 2, 5, 10, 13, 17, 19, 26, 34, 38, 65, 85, 95, 130, 170, 190, 221, 247, 323, 442, 494, 601, 646, 1105, 1202, 1235, 1615, 2210, 2470, 3005, 3230, 4199, 6010, 7813, 8398, 10217, 11419, 15626, 20434, 20995, 22838, 39065, 41990, 51085, 57095, 78130, 102170, 114190, 132821, 148447, 194123, 265642, 296894, 388246, 664105, 742235, 970615, 1328210, 1484470, 1941230, 2523599, 5047198, 12617995, 25235990]

約数ペア:

[(1, 25235990), (2, 12617995), (5, 5047198), (10, 2523599), (13, 1941230), (17, 1484470), (19, 1328210), (26, 970615), (34, 742235), (38, 664105), (65, 388246), (85, 296894), (95, 265642), (130, 194123), (170, 148447), (190, 132821), (221, 114190), (247, 102170), (323, 78130), (442, 57095), (494, 51085), (601, 41990), (646, 39065), (1105, 22838), (1202, 20995), (1235, 20434), (1615, 15626), (2210, 11419), (2470, 10217), (3005, 8398), (3230, 7813), (4199, 6010)]