81723420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1571}}^1$

素因数の和:1620

約数の個数: 108

約数和(自身を含む): 263501784

約数和(自身を除く): 181778364

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 289, 306, 340, 510, 578, 612, 765, 867, 1020, 1156, 1445, 1530, 1571, 1734, 2601, 2890, 3060, 3142, 3468, 4335, 4713, 5202, 5780, 6284, 7855, 8670, 9426, 10404, 13005, 14139, 15710, 17340, 18852, 23565, 26010, 26707, 28278, 31420, 47130, 52020, 53414, 56556, 70695, 80121, 94260, 106828, 133535, 141390, 160242, 240363, 267070, 282780, 320484, 400605, 454019, 480726, 534140, 801210, 908038, 961452, 1201815, 1362057, 1602420, 1816076, 2270095, 2403630, 2724114, 4086171, 4540190, 4807260, 5448228, 6810285, 8172342, 9080380, 13620570, 16344684, 20430855, 27241140, 40861710, 81723420]

約数ペア:

[(1, 81723420), (2, 40861710), (3, 27241140), (4, 20430855), (5, 16344684), (6, 13620570), (9, 9080380), (10, 8172342), (12, 6810285), (15, 5448228), (17, 4807260), (18, 4540190), (20, 4086171), (30, 2724114), (34, 2403630), (36, 2270095), (45, 1816076), (51, 1602420), (60, 1362057), (68, 1201815), (85, 961452), (90, 908038), (102, 801210), (153, 534140), (170, 480726), (180, 454019), (204, 400605), (255, 320484), (289, 282780), (306, 267070), (340, 240363), (510, 160242), (578, 141390), (612, 133535), (765, 106828), (867, 94260), (1020, 80121), (1156, 70695), (1445, 56556), (1530, 53414), (1571, 52020), (1734, 47130), (2601, 31420), (2890, 28278), (3060, 26707), (3142, 26010), (3468, 23565), (4335, 18852), (4713, 17340), (5202, 15710), (5780, 14139), (6284, 13005), (7855, 10404), (8670, 9426)]