21215160

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1901}}^1$

素因数の和:1949

約数の個数: 96

約数和(自身を含む): 71210880

約数和(自身を除く): 49995720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 31, 36, 40, 45, 60, 62, 72, 90, 93, 120, 124, 155, 180, 186, 248, 279, 310, 360, 372, 465, 558, 620, 744, 930, 1116, 1240, 1395, 1860, 1901, 2232, 2790, 3720, 3802, 5580, 5703, 7604, 9505, 11160, 11406, 15208, 17109, 19010, 22812, 28515, 34218, 38020, 45624, 57030, 58931, 68436, 76040, 85545, 114060, 117862, 136872, 171090, 176793, 228120, 235724, 294655, 342180, 353586, 471448, 530379, 589310, 684360, 707172, 883965, 1060758, 1178620, 1414344, 1767930, 2121516, 2357240, 2651895, 3535860, 4243032, 5303790, 7071720, 10607580, 21215160]

約数ペア:

[(1, 21215160), (2, 10607580), (3, 7071720), (4, 5303790), (5, 4243032), (6, 3535860), (8, 2651895), (9, 2357240), (10, 2121516), (12, 1767930), (15, 1414344), (18, 1178620), (20, 1060758), (24, 883965), (30, 707172), (31, 684360), (36, 589310), (40, 530379), (45, 471448), (60, 353586), (62, 342180), (72, 294655), (90, 235724), (93, 228120), (120, 176793), (124, 171090), (155, 136872), (180, 117862), (186, 114060), (248, 85545), (279, 76040), (310, 68436), (360, 58931), (372, 57030), (465, 45624), (558, 38020), (620, 34218), (744, 28515), (930, 22812), (1116, 19010), (1240, 17109), (1395, 15208), (1860, 11406), (1901, 11160), (2232, 9505), (2790, 7604), (3720, 5703), (3802, 5580)]