21113976

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1$

素因数の和:149

約数の個数: 128

約数和(自身を含む): 61286400

約数和(自身を除く): 40172424

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 31, 37, 39, 52, 59, 62, 74, 78, 93, 104, 111, 118, 124, 148, 156, 177, 186, 222, 236, 248, 296, 312, 354, 372, 403, 444, 472, 481, 708, 744, 767, 806, 888, 962, 1147, 1209, 1416, 1443, 1534, 1612, 1829, 1924, 2183, 2294, 2301, 2418, 2886, 3068, 3224, 3441, 3658, 3848, 4366, 4588, 4602, 4836, 5487, 5772, 6136, 6549, 6882, 7316, 8732, 9176, 9204, 9672, 10974, 11544, 13098, 13764, 14632, 14911, 17464, 18408, 21948, 23777, 26196, 27528, 28379, 29822, 43896, 44733, 47554, 52392, 56758, 59644, 67673, 71331, 85137, 89466, 95108, 113516, 119288, 135346, 142662, 170274, 178932, 190216, 203019, 227032, 270692, 285324, 340548, 357864, 406038, 541384, 570648, 681096, 812076, 879749, 1624152, 1759498, 2639247, 3518996, 5278494, 7037992, 10556988, 21113976]

約数ペア:

[(1, 21113976), (2, 10556988), (3, 7037992), (4, 5278494), (6, 3518996), (8, 2639247), (12, 1759498), (13, 1624152), (24, 879749), (26, 812076), (31, 681096), (37, 570648), (39, 541384), (52, 406038), (59, 357864), (62, 340548), (74, 285324), (78, 270692), (93, 227032), (104, 203019), (111, 190216), (118, 178932), (124, 170274), (148, 142662), (156, 135346), (177, 119288), (186, 113516), (222, 95108), (236, 89466), (248, 85137), (296, 71331), (312, 67673), (354, 59644), (372, 56758), (403, 52392), (444, 47554), (472, 44733), (481, 43896), (708, 29822), (744, 28379), (767, 27528), (806, 26196), (888, 23777), (962, 21948), (1147, 18408), (1209, 17464), (1416, 14911), (1443, 14632), (1534, 13764), (1612, 13098), (1829, 11544), (1924, 10974), (2183, 9672), (2294, 9204), (2301, 9176), (2418, 8732), (2886, 7316), (3068, 6882), (3224, 6549), (3441, 6136), (3658, 5772), (3848, 5487), (4366, 4836), (4588, 4602)]