21335860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{617}}^1$

素因数の和:665

約数の個数: 96

約数和(自身を含む): 58141440

約数和(自身を除く): 36805580

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 19, 20, 26, 28, 35, 38, 52, 65, 70, 76, 91, 95, 130, 133, 140, 182, 190, 247, 260, 266, 364, 380, 455, 494, 532, 617, 665, 910, 988, 1234, 1235, 1330, 1729, 1820, 2468, 2470, 2660, 3085, 3458, 4319, 4940, 6170, 6916, 8021, 8638, 8645, 11723, 12340, 16042, 17276, 17290, 21595, 23446, 32084, 34580, 40105, 43190, 46892, 56147, 58615, 80210, 82061, 86380, 112294, 117230, 152399, 160420, 164122, 224588, 234460, 280735, 304798, 328244, 410305, 561470, 609596, 761995, 820610, 1066793, 1122940, 1523990, 1641220, 2133586, 3047980, 4267172, 5333965, 10667930, 21335860]

約数ペア:

[(1, 21335860), (2, 10667930), (4, 5333965), (5, 4267172), (7, 3047980), (10, 2133586), (13, 1641220), (14, 1523990), (19, 1122940), (20, 1066793), (26, 820610), (28, 761995), (35, 609596), (38, 561470), (52, 410305), (65, 328244), (70, 304798), (76, 280735), (91, 234460), (95, 224588), (130, 164122), (133, 160420), (140, 152399), (182, 117230), (190, 112294), (247, 86380), (260, 82061), (266, 80210), (364, 58615), (380, 56147), (455, 46892), (494, 43190), (532, 40105), (617, 34580), (665, 32084), (910, 23446), (988, 21595), (1234, 17290), (1235, 17276), (1330, 16042), (1729, 12340), (1820, 11723), (2468, 8645), (2470, 8638), (2660, 8021), (3085, 6916), (3458, 6170), (4319, 4940)]