181221660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{691}}^1$

素因数の和:784

約数の個数: 144

約数和(自身を含む): 580349952

約数和(自身を除く): 399128292

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 47, 60, 62, 90, 93, 94, 124, 141, 155, 180, 186, 188, 235, 279, 282, 310, 372, 423, 465, 470, 558, 564, 620, 691, 705, 846, 930, 940, 1116, 1382, 1395, 1410, 1457, 1692, 1860, 2073, 2115, 2764, 2790, 2820, 2914, 3455, 4146, 4230, 4371, 5580, 5828, 6219, 6910, 7285, 8292, 8460, 8742, 10365, 12438, 13113, 13820, 14570, 17484, 20730, 21421, 21855, 24876, 26226, 29140, 31095, 32477, 41460, 42842, 43710, 52452, 62190, 64263, 64954, 65565, 85684, 87420, 97431, 107105, 124380, 128526, 129908, 131130, 162385, 192789, 194862, 214210, 257052, 262260, 292293, 321315, 324770, 385578, 389724, 428420, 487155, 584586, 642630, 649540, 771156, 963945, 974310, 1006787, 1169172, 1285260, 1461465, 1927890, 1948620, 2013574, 2922930, 3020361, 3855780, 4027148, 5033935, 5845860, 6040722, 9061083, 10067870, 12081444, 15101805, 18122166, 20135740, 30203610, 36244332, 45305415, 60407220, 90610830, 181221660]

約数ペア:

[(1, 181221660), (2, 90610830), (3, 60407220), (4, 45305415), (5, 36244332), (6, 30203610), (9, 20135740), (10, 18122166), (12, 15101805), (15, 12081444), (18, 10067870), (20, 9061083), (30, 6040722), (31, 5845860), (36, 5033935), (45, 4027148), (47, 3855780), (60, 3020361), (62, 2922930), (90, 2013574), (93, 1948620), (94, 1927890), (124, 1461465), (141, 1285260), (155, 1169172), (180, 1006787), (186, 974310), (188, 963945), (235, 771156), (279, 649540), (282, 642630), (310, 584586), (372, 487155), (423, 428420), (465, 389724), (470, 385578), (558, 324770), (564, 321315), (620, 292293), (691, 262260), (705, 257052), (846, 214210), (930, 194862), (940, 192789), (1116, 162385), (1382, 131130), (1395, 129908), (1410, 128526), (1457, 124380), (1692, 107105), (1860, 97431), (2073, 87420), (2115, 85684), (2764, 65565), (2790, 64954), (2820, 64263), (2914, 62190), (3455, 52452), (4146, 43710), (4230, 42842), (4371, 41460), (5580, 32477), (5828, 31095), (6219, 29140), (6910, 26226), (7285, 24876), (8292, 21855), (8460, 21421), (8742, 20730), (10365, 17484), (12438, 14570), (13113, 13820)]