637879684

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{499}}^1$

素因数の和:621

約数の個数: 72

約数和(自身を含む): 1270752000

約数和(自身を除く): 632872316

約数列:

[1, 2, 4, 13, 26, 31, 52, 61, 62, 122, 124, 169, 244, 338, 403, 499, 676, 793, 806, 998, 1586, 1612, 1891, 1996, 3172, 3782, 5239, 6487, 7564, 10309, 10478, 12974, 15469, 20618, 20956, 24583, 25948, 30439, 30938, 41236, 49166, 60878, 61876, 84331, 98332, 121756, 168662, 201097, 319579, 337324, 395707, 402194, 639158, 791414, 804388, 943609, 1278316, 1582828, 1887218, 2614261, 3774436, 5144191, 5228522, 10288382, 10457044, 12266917, 20576764, 24533834, 49067668, 159469921, 318939842, 637879684]

約数ペア:

[(1, 637879684), (2, 318939842), (4, 159469921), (13, 49067668), (26, 24533834), (31, 20576764), (52, 12266917), (61, 10457044), (62, 10288382), (122, 5228522), (124, 5144191), (169, 3774436), (244, 2614261), (338, 1887218), (403, 1582828), (499, 1278316), (676, 943609), (793, 804388), (806, 791414), (998, 639158), (1586, 402194), (1612, 395707), (1891, 337324), (1996, 319579), (3172, 201097), (3782, 168662), (5239, 121756), (6487, 98332), (7564, 84331), (10309, 61876), (10478, 60878), (12974, 49166), (15469, 41236), (20618, 30938), (20956, 30439), (24583, 25948)]