21070980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{2389}}^1$

素因数の和:2418

約数の個数: 108

約数和(自身を含む): 74381580

約数和(自身を除く): 53310600

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2389, 2940, 4410, 4778, 7167, 8820, 9556, 11945, 14334, 16723, 21501, 23890, 28668, 33446, 35835, 43002, 47780, 50169, 66892, 71670, 83615, 86004, 100338, 107505, 117061, 143340, 150507, 167230, 200676, 215010, 234122, 250845, 301014, 334460, 351183, 430020, 468244, 501690, 585305, 602028, 702366, 752535, 1003380, 1053549, 1170610, 1404732, 1505070, 1755915, 2107098, 2341220, 3010140, 3511830, 4214196, 5267745, 7023660, 10535490, 21070980]

約数ペア:

[(1, 21070980), (2, 10535490), (3, 7023660), (4, 5267745), (5, 4214196), (6, 3511830), (7, 3010140), (9, 2341220), (10, 2107098), (12, 1755915), (14, 1505070), (15, 1404732), (18, 1170610), (20, 1053549), (21, 1003380), (28, 752535), (30, 702366), (35, 602028), (36, 585305), (42, 501690), (45, 468244), (49, 430020), (60, 351183), (63, 334460), (70, 301014), (84, 250845), (90, 234122), (98, 215010), (105, 200676), (126, 167230), (140, 150507), (147, 143340), (180, 117061), (196, 107505), (210, 100338), (245, 86004), (252, 83615), (294, 71670), (315, 66892), (420, 50169), (441, 47780), (490, 43002), (588, 35835), (630, 33446), (735, 28668), (882, 23890), (980, 21501), (1260, 16723), (1470, 14334), (1764, 11945), (2205, 9556), (2389, 8820), (2940, 7167), (4410, 4778)]