2181780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:86

約数の個数: 144

約数和(自身を含む): 7547904

約数和(自身を除く): 5366124

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 23, 30, 31, 34, 36, 45, 46, 51, 60, 62, 68, 69, 85, 90, 92, 93, 102, 115, 124, 138, 153, 155, 170, 180, 186, 204, 207, 230, 255, 276, 279, 306, 310, 340, 345, 372, 391, 414, 460, 465, 510, 527, 558, 612, 620, 690, 713, 765, 782, 828, 930, 1020, 1035, 1054, 1116, 1173, 1380, 1395, 1426, 1530, 1564, 1581, 1860, 1955, 2070, 2108, 2139, 2346, 2635, 2790, 2852, 3060, 3162, 3519, 3565, 3910, 4140, 4278, 4692, 4743, 5270, 5580, 5865, 6324, 6417, 7038, 7130, 7820, 7905, 8556, 9486, 10540, 10695, 11730, 12121, 12834, 14076, 14260, 15810, 17595, 18972, 21390, 23460, 23715, 24242, 25668, 31620, 32085, 35190, 36363, 42780, 47430, 48484, 60605, 64170, 70380, 72726, 94860, 109089, 121210, 128340, 145452, 181815, 218178, 242420, 363630, 436356, 545445, 727260, 1090890, 2181780]

約数ペア:

[(1, 2181780), (2, 1090890), (3, 727260), (4, 545445), (5, 436356), (6, 363630), (9, 242420), (10, 218178), (12, 181815), (15, 145452), (17, 128340), (18, 121210), (20, 109089), (23, 94860), (30, 72726), (31, 70380), (34, 64170), (36, 60605), (45, 48484), (46, 47430), (51, 42780), (60, 36363), (62, 35190), (68, 32085), (69, 31620), (85, 25668), (90, 24242), (92, 23715), (93, 23460), (102, 21390), (115, 18972), (124, 17595), (138, 15810), (153, 14260), (155, 14076), (170, 12834), (180, 12121), (186, 11730), (204, 10695), (207, 10540), (230, 9486), (255, 8556), (276, 7905), (279, 7820), (306, 7130), (310, 7038), (340, 6417), (345, 6324), (372, 5865), (391, 5580), (414, 5270), (460, 4743), (465, 4692), (510, 4278), (527, 4140), (558, 3910), (612, 3565), (620, 3519), (690, 3162), (713, 3060), (765, 2852), (782, 2790), (828, 2635), (930, 2346), (1020, 2139), (1035, 2108), (1054, 2070), (1116, 1955), (1173, 1860), (1380, 1581), (1395, 1564), (1426, 1530)]