20572380

素因数分解:

$2^2\times 3^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1$

素因数の和:127

約数の個数: 168

約数和(自身を含む): 69409872

約数和(自身を除く): 48837492

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 27, 30, 34, 36, 45, 51, 54, 60, 68, 81, 83, 85, 90, 102, 108, 135, 153, 162, 166, 170, 180, 204, 243, 249, 255, 270, 306, 324, 332, 340, 405, 415, 459, 486, 498, 510, 540, 612, 729, 747, 765, 810, 830, 918, 972, 996, 1020, 1215, 1245, 1377, 1411, 1458, 1494, 1530, 1620, 1660, 1836, 2241, 2295, 2430, 2490, 2754, 2822, 2916, 2988, 3060, 3645, 3735, 4131, 4233, 4482, 4590, 4860, 4980, 5508, 5644, 6723, 6885, 7055, 7290, 7470, 8262, 8466, 8964, 9180, 11205, 12393, 12699, 13446, 13770, 14110, 14580, 14940, 16524, 16932, 20169, 20655, 21165, 22410, 24786, 25398, 26892, 27540, 28220, 33615, 38097, 40338, 41310, 42330, 44820, 49572, 50796, 60507, 61965, 63495, 67230, 76194, 80676, 82620, 84660, 100845, 114291, 121014, 123930, 126990, 134460, 152388, 190485, 201690, 228582, 242028, 247860, 253980, 302535, 342873, 380970, 403380, 457164, 571455, 605070, 685746, 761940, 1028619, 1142910, 1210140, 1371492, 1714365, 2057238, 2285820, 3428730, 4114476, 5143095, 6857460, 10286190, 20572380]

約数ペア:

[(1, 20572380), (2, 10286190), (3, 6857460), (4, 5143095), (5, 4114476), (6, 3428730), (9, 2285820), (10, 2057238), (12, 1714365), (15, 1371492), (17, 1210140), (18, 1142910), (20, 1028619), (27, 761940), (30, 685746), (34, 605070), (36, 571455), (45, 457164), (51, 403380), (54, 380970), (60, 342873), (68, 302535), (81, 253980), (83, 247860), (85, 242028), (90, 228582), (102, 201690), (108, 190485), (135, 152388), (153, 134460), (162, 126990), (166, 123930), (170, 121014), (180, 114291), (204, 100845), (243, 84660), (249, 82620), (255, 80676), (270, 76194), (306, 67230), (324, 63495), (332, 61965), (340, 60507), (405, 50796), (415, 49572), (459, 44820), (486, 42330), (498, 41310), (510, 40338), (540, 38097), (612, 33615), (729, 28220), (747, 27540), (765, 26892), (810, 25398), (830, 24786), (918, 22410), (972, 21165), (996, 20655), (1020, 20169), (1215, 16932), (1245, 16524), (1377, 14940), (1411, 14580), (1458, 14110), (1494, 13770), (1530, 13446), (1620, 12699), (1660, 12393), (1836, 11205), (2241, 9180), (2295, 8964), (2430, 8466), (2490, 8262), (2754, 7470), (2822, 7290), (2916, 7055), (2988, 6885), (3060, 6723), (3645, 5644), (3735, 5508), (4131, 4980), (4233, 4860), (4482, 4590)]