21248460

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{109}}^1$

素因数の和:165

約数の個数: 144

約数和(自身を含む): 70408800

約数和(自身を除く): 49160340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 90, 95, 108, 109, 114, 135, 171, 180, 190, 218, 228, 270, 285, 327, 342, 361, 380, 436, 513, 540, 545, 570, 654, 684, 722, 855, 981, 1026, 1083, 1090, 1140, 1308, 1444, 1635, 1710, 1805, 1962, 2052, 2071, 2166, 2180, 2565, 2943, 3249, 3270, 3420, 3610, 3924, 4142, 4332, 4905, 5130, 5415, 5886, 6213, 6498, 6540, 7220, 8284, 9747, 9810, 10260, 10355, 10830, 11772, 12426, 12996, 14715, 16245, 18639, 19494, 19620, 20710, 21660, 24852, 29430, 31065, 32490, 37278, 38988, 39349, 41420, 48735, 55917, 58860, 62130, 64980, 74556, 78698, 93195, 97470, 111834, 118047, 124260, 157396, 186390, 194940, 196745, 223668, 236094, 279585, 354141, 372780, 393490, 472188, 559170, 590235, 708282, 786980, 1062423, 1118340, 1180470, 1416564, 1770705, 2124846, 2360940, 3541410, 4249692, 5312115, 7082820, 10624230, 21248460]

約数ペア:

[(1, 21248460), (2, 10624230), (3, 7082820), (4, 5312115), (5, 4249692), (6, 3541410), (9, 2360940), (10, 2124846), (12, 1770705), (15, 1416564), (18, 1180470), (19, 1118340), (20, 1062423), (27, 786980), (30, 708282), (36, 590235), (38, 559170), (45, 472188), (54, 393490), (57, 372780), (60, 354141), (76, 279585), (90, 236094), (95, 223668), (108, 196745), (109, 194940), (114, 186390), (135, 157396), (171, 124260), (180, 118047), (190, 111834), (218, 97470), (228, 93195), (270, 78698), (285, 74556), (327, 64980), (342, 62130), (361, 58860), (380, 55917), (436, 48735), (513, 41420), (540, 39349), (545, 38988), (570, 37278), (654, 32490), (684, 31065), (722, 29430), (855, 24852), (981, 21660), (1026, 20710), (1083, 19620), (1090, 19494), (1140, 18639), (1308, 16245), (1444, 14715), (1635, 12996), (1710, 12426), (1805, 11772), (1962, 10830), (2052, 10355), (2071, 10260), (2166, 9810), (2180, 9747), (2565, 8284), (2943, 7220), (3249, 6540), (3270, 6498), (3420, 6213), (3610, 5886), (3924, 5415), (4142, 5130), (4332, 4905)]