21176760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{263}}^1$

素因数の和:349

約数の個数: 128

約数和(自身を含む): 70709760

約数和(自身を除く): 49533000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 61, 66, 88, 110, 120, 122, 132, 165, 183, 220, 244, 263, 264, 305, 330, 366, 440, 488, 526, 610, 660, 671, 732, 789, 915, 1052, 1220, 1315, 1320, 1342, 1464, 1578, 1830, 2013, 2104, 2440, 2630, 2684, 2893, 3156, 3355, 3660, 3945, 4026, 5260, 5368, 5786, 6312, 6710, 7320, 7890, 8052, 8679, 10065, 10520, 11572, 13420, 14465, 15780, 16043, 16104, 17358, 20130, 23144, 26840, 28930, 31560, 32086, 34716, 40260, 43395, 48129, 57860, 64172, 69432, 80215, 80520, 86790, 96258, 115720, 128344, 160430, 173580, 176473, 192516, 240645, 320860, 347160, 352946, 385032, 481290, 529419, 641720, 705892, 882365, 962580, 1058838, 1411784, 1764730, 1925160, 2117676, 2647095, 3529460, 4235352, 5294190, 7058920, 10588380, 21176760]

約数ペア:

[(1, 21176760), (2, 10588380), (3, 7058920), (4, 5294190), (5, 4235352), (6, 3529460), (8, 2647095), (10, 2117676), (11, 1925160), (12, 1764730), (15, 1411784), (20, 1058838), (22, 962580), (24, 882365), (30, 705892), (33, 641720), (40, 529419), (44, 481290), (55, 385032), (60, 352946), (61, 347160), (66, 320860), (88, 240645), (110, 192516), (120, 176473), (122, 173580), (132, 160430), (165, 128344), (183, 115720), (220, 96258), (244, 86790), (263, 80520), (264, 80215), (305, 69432), (330, 64172), (366, 57860), (440, 48129), (488, 43395), (526, 40260), (610, 34716), (660, 32086), (671, 31560), (732, 28930), (789, 26840), (915, 23144), (1052, 20130), (1220, 17358), (1315, 16104), (1320, 16043), (1342, 15780), (1464, 14465), (1578, 13420), (1830, 11572), (2013, 10520), (2104, 10065), (2440, 8679), (2630, 8052), (2684, 7890), (2893, 7320), (3156, 6710), (3355, 6312), (3660, 5786), (3945, 5368), (4026, 5260)]