21931380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^2\times {\mathrm{89}}^1$

素因数の和:178

約数の個数: 108

約数和(自身を含む): 69139980

約数和(自身を除く): 47208600

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 60, 74, 89, 90, 111, 148, 178, 180, 185, 222, 267, 333, 356, 370, 444, 445, 534, 555, 666, 740, 801, 890, 1068, 1110, 1332, 1335, 1369, 1602, 1665, 1780, 2220, 2670, 2738, 3204, 3293, 3330, 4005, 4107, 5340, 5476, 6586, 6660, 6845, 8010, 8214, 9879, 12321, 13172, 13690, 16020, 16428, 16465, 19758, 20535, 24642, 27380, 29637, 32930, 39516, 41070, 49284, 49395, 59274, 61605, 65860, 82140, 98790, 118548, 121841, 123210, 148185, 197580, 243682, 246420, 296370, 365523, 487364, 592740, 609205, 731046, 1096569, 1218410, 1462092, 1827615, 2193138, 2436820, 3655230, 4386276, 5482845, 7310460, 10965690, 21931380]

約数ペア:

[(1, 21931380), (2, 10965690), (3, 7310460), (4, 5482845), (5, 4386276), (6, 3655230), (9, 2436820), (10, 2193138), (12, 1827615), (15, 1462092), (18, 1218410), (20, 1096569), (30, 731046), (36, 609205), (37, 592740), (45, 487364), (60, 365523), (74, 296370), (89, 246420), (90, 243682), (111, 197580), (148, 148185), (178, 123210), (180, 121841), (185, 118548), (222, 98790), (267, 82140), (333, 65860), (356, 61605), (370, 59274), (444, 49395), (445, 49284), (534, 41070), (555, 39516), (666, 32930), (740, 29637), (801, 27380), (890, 24642), (1068, 20535), (1110, 19758), (1332, 16465), (1335, 16428), (1369, 16020), (1602, 13690), (1665, 13172), (1780, 12321), (2220, 9879), (2670, 8214), (2738, 8010), (3204, 6845), (3293, 6660), (3330, 6586), (4005, 5476), (4107, 5340)]