21966100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{277}}^1$

素因数の和:365

約数の個数: 72

約数和(自身を含む): 52362968

約数和(自身を除く): 30396868

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 61, 65, 100, 122, 130, 244, 260, 277, 305, 325, 554, 610, 650, 793, 1108, 1220, 1300, 1385, 1525, 1586, 2770, 3050, 3172, 3601, 3965, 5540, 6100, 6925, 7202, 7930, 13850, 14404, 15860, 16897, 18005, 19825, 27700, 33794, 36010, 39650, 67588, 72020, 79300, 84485, 90025, 168970, 180050, 219661, 337940, 360100, 422425, 439322, 844850, 878644, 1098305, 1689700, 2196610, 4393220, 5491525, 10983050, 21966100]

約数ペア:

[(1, 21966100), (2, 10983050), (4, 5491525), (5, 4393220), (10, 2196610), (13, 1689700), (20, 1098305), (25, 878644), (26, 844850), (50, 439322), (52, 422425), (61, 360100), (65, 337940), (100, 219661), (122, 180050), (130, 168970), (244, 90025), (260, 84485), (277, 79300), (305, 72020), (325, 67588), (554, 39650), (610, 36010), (650, 33794), (793, 27700), (1108, 19825), (1220, 18005), (1300, 16897), (1385, 15860), (1525, 14404), (1586, 13850), (2770, 7930), (3050, 7202), (3172, 6925), (3601, 6100), (3965, 5540)]