21490140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2693}}^1$

素因数の和:2731

約数の個数: 96

約数和(自身を含む): 72414720

約数和(自身を除く): 50924580

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 57, 60, 70, 76, 84, 95, 105, 114, 133, 140, 190, 210, 228, 266, 285, 380, 399, 420, 532, 570, 665, 798, 1140, 1330, 1596, 1995, 2660, 2693, 3990, 5386, 7980, 8079, 10772, 13465, 16158, 18851, 26930, 32316, 37702, 40395, 51167, 53860, 56553, 75404, 80790, 94255, 102334, 113106, 153501, 161580, 188510, 204668, 226212, 255835, 282765, 307002, 358169, 377020, 511670, 565530, 614004, 716338, 767505, 1023340, 1074507, 1131060, 1432676, 1535010, 1790845, 2149014, 3070020, 3581690, 4298028, 5372535, 7163380, 10745070, 21490140]

約数ペア:

[(1, 21490140), (2, 10745070), (3, 7163380), (4, 5372535), (5, 4298028), (6, 3581690), (7, 3070020), (10, 2149014), (12, 1790845), (14, 1535010), (15, 1432676), (19, 1131060), (20, 1074507), (21, 1023340), (28, 767505), (30, 716338), (35, 614004), (38, 565530), (42, 511670), (57, 377020), (60, 358169), (70, 307002), (76, 282765), (84, 255835), (95, 226212), (105, 204668), (114, 188510), (133, 161580), (140, 153501), (190, 113106), (210, 102334), (228, 94255), (266, 80790), (285, 75404), (380, 56553), (399, 53860), (420, 51167), (532, 40395), (570, 37702), (665, 32316), (798, 26930), (1140, 18851), (1330, 16158), (1596, 13465), (1995, 10772), (2660, 8079), (2693, 7980), (3990, 5386)]