21374240

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:202

約数の個数: 96

約数和(自身を含む): 54432000

約数和(自身を除く): 33057760

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 79, 80, 89, 95, 152, 158, 160, 178, 190, 304, 316, 356, 380, 395, 445, 608, 632, 712, 760, 790, 890, 1264, 1424, 1501, 1520, 1580, 1691, 1780, 2528, 2848, 3002, 3040, 3160, 3382, 3560, 6004, 6320, 6764, 7031, 7120, 7505, 8455, 12008, 12640, 13528, 14062, 14240, 15010, 16910, 24016, 27056, 28124, 30020, 33820, 35155, 48032, 54112, 56248, 60040, 67640, 70310, 112496, 120080, 133589, 135280, 140620, 224992, 240160, 267178, 270560, 281240, 534356, 562480, 667945, 1068712, 1124960, 1335890, 2137424, 2671780, 4274848, 5343560, 10687120, 21374240]

約数ペア:

[(1, 21374240), (2, 10687120), (4, 5343560), (5, 4274848), (8, 2671780), (10, 2137424), (16, 1335890), (19, 1124960), (20, 1068712), (32, 667945), (38, 562480), (40, 534356), (76, 281240), (79, 270560), (80, 267178), (89, 240160), (95, 224992), (152, 140620), (158, 135280), (160, 133589), (178, 120080), (190, 112496), (304, 70310), (316, 67640), (356, 60040), (380, 56248), (395, 54112), (445, 48032), (608, 35155), (632, 33820), (712, 30020), (760, 28124), (790, 27056), (890, 24016), (1264, 16910), (1424, 15010), (1501, 14240), (1520, 14062), (1580, 13528), (1691, 12640), (1780, 12008), (2528, 8455), (2848, 7505), (3002, 7120), (3040, 7031), (3160, 6764), (3382, 6320), (3560, 6004)]