221592420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2477}}^1$

素因数の和:2570

約数の個数: 144

約数和(自身を含む): 779321088

約数和(自身を除く): 557728668

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 71, 84, 90, 105, 126, 140, 142, 180, 210, 213, 252, 284, 315, 355, 420, 426, 497, 630, 639, 710, 852, 994, 1065, 1260, 1278, 1420, 1491, 1988, 2130, 2477, 2485, 2556, 2982, 3195, 4260, 4473, 4954, 4970, 5964, 6390, 7431, 7455, 8946, 9908, 9940, 12385, 12780, 14862, 14910, 17339, 17892, 22293, 22365, 24770, 29724, 29820, 34678, 37155, 44586, 44730, 49540, 52017, 69356, 74310, 86695, 89172, 89460, 104034, 111465, 148620, 156051, 173390, 175867, 208068, 222930, 260085, 312102, 346780, 351734, 445860, 520170, 527601, 624204, 703468, 780255, 879335, 1040340, 1055202, 1231069, 1560510, 1582803, 1758670, 2110404, 2462138, 2638005, 3121020, 3165606, 3517340, 3693207, 4924276, 5276010, 6155345, 6331212, 7386414, 7914015, 10552020, 11079621, 12310690, 14772828, 15828030, 18466035, 22159242, 24621380, 31656060, 36932070, 44318484, 55398105, 73864140, 110796210, 221592420]

約数ペア:

[(1, 221592420), (2, 110796210), (3, 73864140), (4, 55398105), (5, 44318484), (6, 36932070), (7, 31656060), (9, 24621380), (10, 22159242), (12, 18466035), (14, 15828030), (15, 14772828), (18, 12310690), (20, 11079621), (21, 10552020), (28, 7914015), (30, 7386414), (35, 6331212), (36, 6155345), (42, 5276010), (45, 4924276), (60, 3693207), (63, 3517340), (70, 3165606), (71, 3121020), (84, 2638005), (90, 2462138), (105, 2110404), (126, 1758670), (140, 1582803), (142, 1560510), (180, 1231069), (210, 1055202), (213, 1040340), (252, 879335), (284, 780255), (315, 703468), (355, 624204), (420, 527601), (426, 520170), (497, 445860), (630, 351734), (639, 346780), (710, 312102), (852, 260085), (994, 222930), (1065, 208068), (1260, 175867), (1278, 173390), (1420, 156051), (1491, 148620), (1988, 111465), (2130, 104034), (2477, 89460), (2485, 89172), (2556, 86695), (2982, 74310), (3195, 69356), (4260, 52017), (4473, 49540), (4954, 44730), (4970, 44586), (5964, 37155), (6390, 34678), (7431, 29820), (7455, 29724), (8946, 24770), (9908, 22365), (9940, 22293), (12385, 17892), (12780, 17339), (14862, 14910)]