51275380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^2$

素因数の和:197

約数の個数: 72

約数和(自身を含む): 120117816

約数和(自身を除く): 68842436

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 61, 65, 106, 122, 130, 212, 244, 260, 265, 305, 530, 610, 689, 793, 1060, 1220, 1378, 1586, 2756, 3172, 3233, 3445, 3721, 3965, 6466, 6890, 7442, 7930, 12932, 13780, 14884, 15860, 16165, 18605, 32330, 37210, 42029, 48373, 64660, 74420, 84058, 96746, 168116, 193492, 197213, 210145, 241865, 394426, 420290, 483730, 788852, 840580, 967460, 986065, 1972130, 2563769, 3944260, 5127538, 10255076, 12818845, 25637690, 51275380]

約数ペア:

[(1, 51275380), (2, 25637690), (4, 12818845), (5, 10255076), (10, 5127538), (13, 3944260), (20, 2563769), (26, 1972130), (52, 986065), (53, 967460), (61, 840580), (65, 788852), (106, 483730), (122, 420290), (130, 394426), (212, 241865), (244, 210145), (260, 197213), (265, 193492), (305, 168116), (530, 96746), (610, 84058), (689, 74420), (793, 64660), (1060, 48373), (1220, 42029), (1378, 37210), (1586, 32330), (2756, 18605), (3172, 16165), (3233, 15860), (3445, 14884), (3721, 13780), (3965, 12932), (6466, 7930), (6890, 7442)]