21210019920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{461}}^1\times {\mathrm{63901}}^1$

素因数の和:64381

約数の個数: 120

約数和(自身を含む): 71385946632

約数和(自身を除く): 50175926712

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, 461, 720, 922, 1383, 1844, 2305, 2766, 3688, 4149, 4610, 5532, 6915, 7376, 8298, 9220, 11064, 13830, 16596, 18440, 20745, 22128, 27660, 33192, 36880, 41490, 55320, 63901, 66384, 82980, 110640, 127802, 165960, 191703, 255604, 319505, 331920, 383406, 511208, 575109, 639010, 766812, 958515, 1022416, 1150218, 1278020, 1533624, 1917030, 2300436, 2556040, 2875545, 3067248, 3834060, 4600872, 5112080, 5751090, 7668120, 9201744, 11502180, 15336240, 23004360, 29458361, 46008720, 58916722, 88375083, 117833444, 147291805, 176750166, 235666888, 265125249, 294583610, 353500332, 441875415, 471333776, 530250498, 589167220, 707000664, 883750830, 1060500996, 1178334440, 1325626245, 1414001328, 1767501660, 2121001992, 2356668880, 2651252490, 3535003320, 4242003984, 5302504980, 7070006640, 10605009960, 21210019920]

約数ペア:

[(1, 21210019920), (2, 10605009960), (3, 7070006640), (4, 5302504980), (5, 4242003984), (6, 3535003320), (8, 2651252490), (9, 2356668880), (10, 2121001992), (12, 1767501660), (15, 1414001328), (16, 1325626245), (18, 1178334440), (20, 1060500996), (24, 883750830), (30, 707000664), (36, 589167220), (40, 530250498), (45, 471333776), (48, 441875415), (60, 353500332), (72, 294583610), (80, 265125249), (90, 235666888), (120, 176750166), (144, 147291805), (180, 117833444), (240, 88375083), (360, 58916722), (461, 46008720), (720, 29458361), (922, 23004360), (1383, 15336240), (1844, 11502180), (2305, 9201744), (2766, 7668120), (3688, 5751090), (4149, 5112080), (4610, 4600872), (5532, 3834060), (6915, 3067248), (7376, 2875545), (8298, 2556040), (9220, 2300436), (11064, 1917030), (13830, 1533624), (16596, 1278020), (18440, 1150218), (20745, 1022416), (22128, 958515), (27660, 766812), (33192, 639010), (36880, 575109), (41490, 511208), (55320, 383406), (63901, 331920), (66384, 319505), (82980, 255604), (110640, 191703), (127802, 165960)]