20005125220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1\times {\mathrm{4133}}^1$

素因数の和:4421

約数の個数: 96

約数和(自身を含む): 44759909376

約数和(自身を除く): 24754784156

約数列:

[1, 2, 4, 5, 10, 20, 31, 37, 62, 74, 124, 148, 155, 185, 211, 310, 370, 422, 620, 740, 844, 1055, 1147, 2110, 2294, 4133, 4220, 4588, 5735, 6541, 7807, 8266, 11470, 13082, 15614, 16532, 20665, 22940, 26164, 31228, 32705, 39035, 41330, 65410, 78070, 82660, 128123, 130820, 152921, 156140, 242017, 256246, 305842, 484034, 512492, 611684, 640615, 764605, 872063, 968068, 1210085, 1281230, 1529210, 1744126, 2420170, 2562460, 3058420, 3488252, 4360315, 4740551, 4840340, 8720630, 9481102, 17441260, 18962204, 23702755, 27033953, 32266331, 47405510, 54067906, 64532662, 94811020, 108135812, 129065324, 135169765, 161331655, 270339530, 322663310, 540679060, 645326620, 1000256261, 2000512522, 4001025044, 5001281305, 10002562610, 20005125220]

約数ペア:

[(1, 20005125220), (2, 10002562610), (4, 5001281305), (5, 4001025044), (10, 2000512522), (20, 1000256261), (31, 645326620), (37, 540679060), (62, 322663310), (74, 270339530), (124, 161331655), (148, 135169765), (155, 129065324), (185, 108135812), (211, 94811020), (310, 64532662), (370, 54067906), (422, 47405510), (620, 32266331), (740, 27033953), (844, 23702755), (1055, 18962204), (1147, 17441260), (2110, 9481102), (2294, 8720630), (4133, 4840340), (4220, 4740551), (4588, 4360315), (5735, 3488252), (6541, 3058420), (7807, 2562460), (8266, 2420170), (11470, 1744126), (13082, 1529210), (15614, 1281230), (16532, 1210085), (20665, 968068), (22940, 872063), (26164, 764605), (31228, 640615), (32705, 611684), (39035, 512492), (41330, 484034), (65410, 305842), (78070, 256246), (82660, 242017), (128123, 156140), (130820, 152921)]