21439980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6269}}^1$

素因数の和:6303

約数の個数: 72

約数和(自身を含む): 68468400

約数和(自身を除く): 47028420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 6269, 12538, 18807, 25076, 31345, 37614, 56421, 62690, 75228, 94035, 112842, 119111, 125380, 188070, 225684, 238222, 282105, 357333, 376140, 476444, 564210, 595555, 714666, 1071999, 1128420, 1191110, 1429332, 1786665, 2143998, 2382220, 3573330, 4287996, 5359995, 7146660, 10719990, 21439980]

約数ペア:

[(1, 21439980), (2, 10719990), (3, 7146660), (4, 5359995), (5, 4287996), (6, 3573330), (9, 2382220), (10, 2143998), (12, 1786665), (15, 1429332), (18, 1191110), (19, 1128420), (20, 1071999), (30, 714666), (36, 595555), (38, 564210), (45, 476444), (57, 376140), (60, 357333), (76, 282105), (90, 238222), (95, 225684), (114, 188070), (171, 125380), (180, 119111), (190, 112842), (228, 94035), (285, 75228), (342, 62690), (380, 56421), (570, 37614), (684, 31345), (855, 25076), (1140, 18807), (1710, 12538), (3420, 6269)]