28119780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1$

素因数の和:286

約数の個数: 144

約数和(自身を含む): 93837744

約数和(自身を除く): 65717964

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 61, 65, 78, 90, 117, 122, 130, 156, 180, 183, 195, 197, 234, 244, 260, 305, 366, 390, 394, 468, 549, 585, 591, 610, 732, 780, 788, 793, 915, 985, 1098, 1170, 1182, 1220, 1586, 1773, 1830, 1970, 2196, 2340, 2364, 2379, 2561, 2745, 2955, 3172, 3546, 3660, 3940, 3965, 4758, 5122, 5490, 5910, 7092, 7137, 7683, 7930, 8865, 9516, 10244, 10980, 11820, 11895, 12017, 12805, 14274, 15366, 15860, 17730, 23049, 23790, 24034, 25610, 28548, 30732, 35460, 35685, 36051, 38415, 46098, 47580, 48068, 51220, 60085, 71370, 72102, 76830, 92196, 108153, 115245, 120170, 142740, 144204, 153660, 156221, 180255, 216306, 230490, 240340, 312442, 360510, 432612, 460980, 468663, 540765, 624884, 721020, 781105, 937326, 1081530, 1405989, 1562210, 1874652, 2163060, 2343315, 2811978, 3124420, 4686630, 5623956, 7029945, 9373260, 14059890, 28119780]

約数ペア:

[(1, 28119780), (2, 14059890), (3, 9373260), (4, 7029945), (5, 5623956), (6, 4686630), (9, 3124420), (10, 2811978), (12, 2343315), (13, 2163060), (15, 1874652), (18, 1562210), (20, 1405989), (26, 1081530), (30, 937326), (36, 781105), (39, 721020), (45, 624884), (52, 540765), (60, 468663), (61, 460980), (65, 432612), (78, 360510), (90, 312442), (117, 240340), (122, 230490), (130, 216306), (156, 180255), (180, 156221), (183, 153660), (195, 144204), (197, 142740), (234, 120170), (244, 115245), (260, 108153), (305, 92196), (366, 76830), (390, 72102), (394, 71370), (468, 60085), (549, 51220), (585, 48068), (591, 47580), (610, 46098), (732, 38415), (780, 36051), (788, 35685), (793, 35460), (915, 30732), (985, 28548), (1098, 25610), (1170, 24034), (1182, 23790), (1220, 23049), (1586, 17730), (1773, 15860), (1830, 15366), (1970, 14274), (2196, 12805), (2340, 12017), (2364, 11895), (2379, 11820), (2561, 10980), (2745, 10244), (2955, 9516), (3172, 8865), (3546, 7930), (3660, 7683), (3940, 7137), (3965, 7092), (4758, 5910), (5122, 5490)]