21995280

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{599}}^1$

素因数の和:638

約数の個数: 160

約数和(自身を含む): 80352000

約数和(自身を除く): 58356720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 27, 30, 34, 36, 40, 45, 48, 51, 54, 60, 68, 72, 80, 85, 90, 102, 108, 120, 135, 136, 144, 153, 170, 180, 204, 216, 240, 255, 270, 272, 306, 340, 360, 408, 432, 459, 510, 540, 599, 612, 680, 720, 765, 816, 918, 1020, 1080, 1198, 1224, 1360, 1530, 1797, 1836, 2040, 2160, 2295, 2396, 2448, 2995, 3060, 3594, 3672, 4080, 4590, 4792, 5391, 5990, 6120, 7188, 7344, 8985, 9180, 9584, 10183, 10782, 11980, 12240, 14376, 16173, 17970, 18360, 20366, 21564, 23960, 26955, 28752, 30549, 32346, 35940, 36720, 40732, 43128, 47920, 50915, 53910, 61098, 64692, 71880, 80865, 81464, 86256, 91647, 101830, 107820, 122196, 129384, 143760, 152745, 161730, 162928, 183294, 203660, 215640, 244392, 258768, 274941, 305490, 323460, 366588, 407320, 431280, 458235, 488784, 549882, 610980, 646920, 733176, 814640, 916470, 1099764, 1221960, 1293840, 1374705, 1466352, 1832940, 2199528, 2443920, 2749410, 3665880, 4399056, 5498820, 7331760, 10997640, 21995280]

約数ペア:

[(1, 21995280), (2, 10997640), (3, 7331760), (4, 5498820), (5, 4399056), (6, 3665880), (8, 2749410), (9, 2443920), (10, 2199528), (12, 1832940), (15, 1466352), (16, 1374705), (17, 1293840), (18, 1221960), (20, 1099764), (24, 916470), (27, 814640), (30, 733176), (34, 646920), (36, 610980), (40, 549882), (45, 488784), (48, 458235), (51, 431280), (54, 407320), (60, 366588), (68, 323460), (72, 305490), (80, 274941), (85, 258768), (90, 244392), (102, 215640), (108, 203660), (120, 183294), (135, 162928), (136, 161730), (144, 152745), (153, 143760), (170, 129384), (180, 122196), (204, 107820), (216, 101830), (240, 91647), (255, 86256), (270, 81464), (272, 80865), (306, 71880), (340, 64692), (360, 61098), (408, 53910), (432, 50915), (459, 47920), (510, 43128), (540, 40732), (599, 36720), (612, 35940), (680, 32346), (720, 30549), (765, 28752), (816, 26955), (918, 23960), (1020, 21564), (1080, 20366), (1198, 18360), (1224, 17970), (1360, 16173), (1530, 14376), (1797, 12240), (1836, 11980), (2040, 10782), (2160, 10183), (2295, 9584), (2396, 9180), (2448, 8985), (2995, 7344), (3060, 7188), (3594, 6120), (3672, 5990), (4080, 5391), (4590, 4792)]