21821040

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{30307}}^1$

素因数の和:30326

約数の個数: 60

約数和(自身を含む): 73284744

約数和(自身を除く): 51463704

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 30307, 60614, 90921, 121228, 151535, 181842, 242456, 272763, 303070, 363684, 454605, 484912, 545526, 606140, 727368, 909210, 1091052, 1212280, 1363815, 1454736, 1818420, 2182104, 2424560, 2727630, 3636840, 4364208, 5455260, 7273680, 10910520, 21821040]

約数ペア:

[(1, 21821040), (2, 10910520), (3, 7273680), (4, 5455260), (5, 4364208), (6, 3636840), (8, 2727630), (9, 2424560), (10, 2182104), (12, 1818420), (15, 1454736), (16, 1363815), (18, 1212280), (20, 1091052), (24, 909210), (30, 727368), (36, 606140), (40, 545526), (45, 484912), (48, 454605), (60, 363684), (72, 303070), (80, 272763), (90, 242456), (120, 181842), (144, 151535), (180, 121228), (240, 90921), (360, 60614), (720, 30307)]