20648820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{307}}^1$

素因数の和:397

約数の個数: 96

約数和(自身を含む): 62092800

約数和(自身を除く): 41443980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 59, 60, 76, 95, 114, 118, 177, 190, 228, 236, 285, 295, 307, 354, 380, 570, 590, 614, 708, 885, 921, 1121, 1140, 1180, 1228, 1535, 1770, 1842, 2242, 3070, 3363, 3540, 3684, 4484, 4605, 5605, 5833, 6140, 6726, 9210, 11210, 11666, 13452, 16815, 17499, 18113, 18420, 22420, 23332, 29165, 33630, 34998, 36226, 54339, 58330, 67260, 69996, 72452, 87495, 90565, 108678, 116660, 174990, 181130, 217356, 271695, 344147, 349980, 362260, 543390, 688294, 1032441, 1086780, 1376588, 1720735, 2064882, 3441470, 4129764, 5162205, 6882940, 10324410, 20648820]

約数ペア:

[(1, 20648820), (2, 10324410), (3, 6882940), (4, 5162205), (5, 4129764), (6, 3441470), (10, 2064882), (12, 1720735), (15, 1376588), (19, 1086780), (20, 1032441), (30, 688294), (38, 543390), (57, 362260), (59, 349980), (60, 344147), (76, 271695), (95, 217356), (114, 181130), (118, 174990), (177, 116660), (190, 108678), (228, 90565), (236, 87495), (285, 72452), (295, 69996), (307, 67260), (354, 58330), (380, 54339), (570, 36226), (590, 34998), (614, 33630), (708, 29165), (885, 23332), (921, 22420), (1121, 18420), (1140, 18113), (1180, 17499), (1228, 16815), (1535, 13452), (1770, 11666), (1842, 11210), (2242, 9210), (3070, 6726), (3363, 6140), (3540, 5833), (3684, 5605), (4484, 4605)]