28840140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{487}}^1$

素因数の和:556

約数の個数: 144

約数和(自身を含む): 102316032

約数和(自身を除く): 73475892

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 47, 60, 63, 70, 84, 90, 94, 105, 126, 140, 141, 180, 188, 210, 235, 252, 282, 315, 329, 420, 423, 470, 487, 564, 630, 658, 705, 846, 940, 974, 987, 1260, 1316, 1410, 1461, 1645, 1692, 1948, 1974, 2115, 2435, 2820, 2922, 2961, 3290, 3409, 3948, 4230, 4383, 4870, 4935, 5844, 5922, 6580, 6818, 7305, 8460, 8766, 9740, 9870, 10227, 11844, 13636, 14610, 14805, 17045, 17532, 19740, 20454, 21915, 22889, 29220, 29610, 30681, 34090, 40908, 43830, 45778, 51135, 59220, 61362, 68180, 68667, 87660, 91556, 102270, 114445, 122724, 137334, 153405, 160223, 204540, 206001, 228890, 274668, 306810, 320446, 343335, 412002, 457780, 480669, 613620, 640892, 686670, 801115, 824004, 961338, 1030005, 1373340, 1442007, 1602230, 1922676, 2060010, 2403345, 2884014, 3204460, 4120020, 4806690, 5768028, 7210035, 9613380, 14420070, 28840140]

約数ペア:

[(1, 28840140), (2, 14420070), (3, 9613380), (4, 7210035), (5, 5768028), (6, 4806690), (7, 4120020), (9, 3204460), (10, 2884014), (12, 2403345), (14, 2060010), (15, 1922676), (18, 1602230), (20, 1442007), (21, 1373340), (28, 1030005), (30, 961338), (35, 824004), (36, 801115), (42, 686670), (45, 640892), (47, 613620), (60, 480669), (63, 457780), (70, 412002), (84, 343335), (90, 320446), (94, 306810), (105, 274668), (126, 228890), (140, 206001), (141, 204540), (180, 160223), (188, 153405), (210, 137334), (235, 122724), (252, 114445), (282, 102270), (315, 91556), (329, 87660), (420, 68667), (423, 68180), (470, 61362), (487, 59220), (564, 51135), (630, 45778), (658, 43830), (705, 40908), (846, 34090), (940, 30681), (974, 29610), (987, 29220), (1260, 22889), (1316, 21915), (1410, 20454), (1461, 19740), (1645, 17532), (1692, 17045), (1948, 14805), (1974, 14610), (2115, 13636), (2435, 11844), (2820, 10227), (2922, 9870), (2961, 9740), (3290, 8766), (3409, 8460), (3948, 7305), (4230, 6818), (4383, 6580), (4870, 5922), (4935, 5844)]